Note 1.

Nature of Banking Activities and Significant Accounting Policies

First National Corporation (the Company) is the bank holding company of First Bank (the Bank), First National (VA) Statutory Trust II (Trust II) and First National (VA) Statutory Trust III (Trust III). The Trusts were formed for the purpose of issuing redeemable capital securities, commonly known as trust preferred securities. The Bank owns First Bank Financial Services, Inc., which invests in entities that provide title insurance and investment services. The Bank owns Shen-Valley Land Holdings, LLC which holds other real estate owned. The Bank provides loan, deposit, wealth management and other products and services in the northern Shenandoah Valley region of Virginia. Loan products and services include personal loans, residential mortgages, home equity loans and commercial loans. Deposit products and services include checking, savings, NOW accounts, money market accounts, IRA accounts, certificates of deposit and cash management accounts. The Bank offers other services, including internet banking, mobile banking, remote deposit capture and other traditional banking services.

The accounting and reporting policies of the Company conform to accounting principles generally accepted in the United States of America and to accepted practices within the banking industry.

Principles of Consolidation

The consolidated financial statements of First National Corporation include the accounts of all six companies. All material intercompany balances and transactions have been eliminated in consolidation, except for balances and transactions related to the Trusts. The subordinated debt of these Trusts is reflected as a liability of the Company.

Use of Estimates

In preparing consolidated financial statements in conformity with accounting principles generally accepted in the United States, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the consolidated balance sheet and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, valuation of deferred tax assets and liabilities, valuation of other real estate owned, pension obligations and other-than-temporary impairment of securities.

Significant Group Concentrations of Credit Risk

Most of the Company’s activities are with customers located within the northern Shenandoah Valley region of Virginia. The types of lending that the Company engages in are included in Note 3. The Company does not have a significant concentration to any one customer.

Cash and Cash Equivalents

For purposes of the consolidated statements of cash flows, the Company has defined cash equivalents as those amounts included in the balance sheet captions “Cash and due from banks” and “Interest-bearing deposits in banks.”

Securities

Investments in debt securities with readily determinable fair values are classified as either held to maturity, available for sale (AFS) or trading based on management’s intent. Currently, all of the Company’s debt securities are classified as AFS. Equity investments in the FHLB, the Federal Reserve Bank of Richmond and Community Bankers Bank are separately classified as restricted securities and are carried at cost. AFS securities are carried at estimated fair value with the corresponding unrealized gains and losses excluded from earnings and reported in other comprehensive income. Purchase premiums and discounts are recognized in interest income using the interest method over the terms of the securities. Gains or losses on the sale of securities are recorded on the trade date using the amortized cost of the specific security sold.

Impairment of securities occurs when the fair value of a security is less than its amortized cost. For debt securities, impairment is considered other-than-temporary and recognized in its entirety in net income if either the Company (1) intends to sell the security or (2) it is more likely than not that it will be required to sell the security before recovery of its amortized cost basis. If, however, the Company does not intend to sell the security and it is not more-than-likely that it will be required to sell the security before recovery, the Company must determine what portion of the impairment is attributable to a credit loss, which occurs when the amortized cost of the security exceeds the present value of the cash flows expected to be collected from the security. If there is no credit loss, there is no other-than-temporary impairment. If there is a credit loss, other-than-temporary impairment exists, and the credit loss must be recognized in net income and the remaining portion of impairment must be recognized in other comprehensive income.

For equity securities carried at cost as restricted securities, impairment is considered to be other-than-temporary based on the Company’s ability and intent to hold the investment until a recovery of fair value. Other-than-temporary impairment of an equity security results in a write-down that must be included in income.

The Company regularly reviews each security for other-than-temporary impairment based on criteria that include the extent to which cost exceeds market price, the duration of that market decline, the financial health of and specific prospects for the issuer, the best estimate of the present value of cash flows expected to be collected from debt securities, the Company’s intention with regard to holding the security to maturity and the likelihood that the Company would be required to sell the security before recovery.

Loans Held for Sale

Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or estimated fair value. The Company, through its banking subsidiary, requires a firm purchase commitment from a permanent investor before loans held for sale can be closed, thus limiting interest rate risk. Net unrealized losses, if any, are recognized through a valuation allowance by charges to income.

The Bank enters into commitments to originate mortgage loans whereby the interest rate on the loan is determined prior to funding (rate lock commitments). Rate lock commitments on mortgage loans that are intended to be sold are considered to be derivatives. The period of time between issuance of a loan commitment and closing and sale of the loan generally ranges from 30 to 60 days. The Bank protects itself from changes in interest rates through the use of best efforts forward delivery commitments, whereby the Bank commits to sell a loan at the time the borrower commits to an interest rate with the intent that the buyer has assumed interest rate risk on the loan. As a result, the Bank is not exposed to losses nor will it realize significant gains related to its rate lock commitments due to changes in interest rates. The correlation between the rate lock commitments and the best efforts contracts is very high due to their similarity.

The market value of rate lock commitments and best efforts contracts is not readily ascertainable with precision because rate lock commitments and best efforts contracts are not actively traded in stand-alone markets. The Bank determines the fair value of rate lock commitments and best efforts contracts by measuring the change in the value of the underlying asset while taking into consideration the probability that the rate lock commitments will close. Because of the high correlation between rate lock commitments and best efforts contracts, no gain or loss occurs on the rate lock commitments.

Loans

The Company, through its banking subsidiary, grants mortgage, commercial and consumer loans to customers. The bank segments its loan portfolio into real estate loans, commercial and industrial loans, and consumer and other loans. Real estate loans are further divided into the following classes: Construction and Land Development; 1-4 Family Residential; and Other Real Estate Loans. Descriptions of the Company’s loan classes are as follows:

Real Estate Loans – Construction and Land Development: The Company originates construction loans for the acquisition and development of land and construction of condominiums, townhomes, and one-to-four family residences.

Real Estate Loans – 1-4 Family: This class of loans includes loans secured by one-to-four family homes. In addition to traditional residential mortgage loans secured by a first or junior lien on the property, the Bank offers home equity lines of credit.

Real Estate Loans – Other: This loan class consists primarily of loans secured by various types of commercial real estate typically in the Bank’s market area, including multi-family residential buildings, commercial buildings and offices, hotels, small shopping centers, farms and churches.

Commercial and Industrial Loans: Commercial loans are typically secured with non-real estate commercial property. The Company makes commercial loans primarily to businesses located within its market area.

Consumer and Other Loans: Consumer loans include all loans made to individuals for consumer or personal purposes. They include new and used automobile loans, unsecured loans and lines of credit.

A substantial portion of the loan portfolio is represented by residential and commercial loans secured by real estate throughout the northern Shenandoah Valley region of Virginia. The ability of the Bank’s debtors to honor their contracts may be impacted by the real estate and general economic conditions in this area.

Loans that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off generally are reported at their outstanding unpaid principal balances less the allowance for loan losses and any deferred fees or costs on originated loans. Interest income is accrued and credited to income based on the unpaid principal balance. Loan origination fees, net of certain origination costs, are deferred and recognized as an adjustment of the related loan yield using the interest method.

A loan’s past due status is based on the contractual due date of the most delinquent payment due. Loans are generally placed on non-accrual status when the collection of principal or interest is 90 days or more past due, or earlier, if collection is uncertain based on an evaluation of the net realizable value of the collateral and the financial strength of the borrower. Loans greater than 90 days past due may remain on accrual status if management determines it has adequate collateral to cover the principal and interest. For those loans that are carried on non-accrual status, payments are first applied to principal outstanding. A loan may be returned to accrual status if the borrower has demonstrated a sustained period of repayment performance in accordance with the contractual terms of the loan and there is reasonable assurance the borrower will continue to make payments as agreed. These policies are applied consistently across the loan portfolio.

All interest accrued but not collected for loans that are placed on non-accrual or charged off is reversed against interest income. The interest on these loans is accounted for on the cost-recovery method, until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.

Any unsecured loan that is deemed uncollectible is charged-off in full. Any secured loan that is considered by management to be uncollectible is partially charged-off and carried at the fair value of the collateral less estimated selling costs. This charge-off policy applies to all loan segments.

Impaired Loans

A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect all scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value (net of selling costs), and the probability of collecting scheduled principal and interest payments when due. Additionally, management generally evaluates substandard and doubtful loans greater than $250 thousand for impairment. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan-by-loan basis by either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s obtainable market price, or the fair market value of the collateral, net of selling costs, if the loan is collateral dependent. Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Accordingly, the Company typically does not separately identify individual consumer, residential and certain small commercial loans that are less than $250 thousand for impairment disclosures, except for troubled debt restructurings (TDRs) as noted below.

Troubled Debt Restructurings (TDR)

In situations where, for economic or legal reasons related to a borrower’s financial condition, management may grant a concession to the borrower that it would not otherwise consider, the related loan is classified as a TDR. TDRs are considered impaired loans. Upon designation as a TDR, the Company evaluates the borrower’s payment history, past due status and ability to make payments based on the revised terms of the loan. If a loan was accruing prior to being modified as a TDR and if the Company concludes that the borrower is able to make such payments, and there are no other factors or circumstances that would cause it to conclude otherwise, the loan will remain on an accruing status. If a loan was on non-accrual status at the time of the TDR, the loan will remain on non-accrual status following the modification and may be returned to accrual status based on the policy for returning loans to accrual status as noted above. There were $1.9 million and $6.3 million in loans classified as TDRs as of December 31, 2013 and 2012, respectively.

Allowance for Loan Losses

The allowance for loan losses is established as losses are estimated to have occurred through a provision for loan losses charged to earnings. Loan losses are charged against the allowance when management determines that the loan balance is uncollectible. Subsequent recoveries, if any, are credited to the allowance. For further information about the Company’s loans and the allowance for loan losses, see Notes 3 and 4.

The allowance for loan losses is evaluated on a quarterly basis by management and is based upon management’s periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available.

The allowance represents an amount that, in management’s judgment, will be adequate to absorb any losses on existing loans that may become uncollectible. Management’s judgment in determining the level of the allowance is based on evaluations of the collectability of loans while taking into consideration such factors as trends in delinquencies and charge-offs, changes in the nature and volume of the loan portfolio, current economic conditions that may affect a borrower’s ability to repay and the value of the collateral, overall portfolio quality and review of specific potential losses. The evaluation also considers the following risk characteristics of each loan portfolio class:

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1-4 family residential mortgage loans carry risks associated with the continued credit-worthiness of the borrower and changes in the value of the collateral.

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Real estate construction and land development loans carry risks that the project may not be finished according to schedule, the project may not be finished according to budget and the value of the collateral may, at any point in time, be less than the principal amount of the loan. Construction loans also bear the risk that the general contractor, who may or may not be a loan customer, may be unable to finish the construction project as planned because of financial pressure or other factors unrelated to the project.

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Other real estate loans and commercial and industrial loans carry risks associated with the successful operation of a business or a real estate project, in addition to other risks associated with the ownership of real estate, because repayment of these loans may be dependent upon the profitability and cash flows of the business or project. In addition, there is risk associated with the value of collateral other than real estate which may depreciate over time and cannot be appraised with as much reliability.

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Consumer and other loans carry risk associated with the continued credit-worthiness of the borrower and the value of the collateral, i.e. rapidly depreciating assets such as automobiles, or lack thereof. Consumer loans are likely to be immediately adversely affected by job loss, divorce, illness or personal bankruptcy, or other changes in circumstances.

The allowance for loan losses consists of specific and general components. The specific component relates to loans that are classified as impaired, and is established when the discounted cash flows, collateral value or observable market price of the impaired loan is lower than the carrying value of that loan. For collateral dependent loans, an updated appraisal is ordered if a current one is not on file. Appraisals are performed by independent third-party appraisers with relevant industry experience. Adjustments to the appraised value may be made based on recent sales of like properties or general market conditions among other considerations.

The general component covers loans that are not considered impaired and is based on historical loss experience adjusted for qualitative factors. The historical loss experience is calculated by loan type and uses an average loss rate during the preceding twelve quarters. The qualitative factors are assigned by management based on delinquencies and asset quality, national and local economic trends, effects of the changes in the value of underlying collateral, trends in volume and terms of loans, effects of changes in lending policy, the experience and depth of management, concentrations of credit, quality of the loan review system and the effect of external factors such as competition and regulatory requirements. The factors assigned differ by loan type. The general allowance estimates losses whose impact on the portfolio has yet to be recognized by a specific allowance. Allowance factors and the overall size of the allowance may change from period to period based on management’s assessment of the above described factors and the relative weights given to each factor.

Premises and Equipment

Land is carried at cost. Premises and equipment are stated at cost, less accumulated depreciation and amortization. Premises and equipment are depreciated over their estimated useful lives ranging from three years to forty years; leasehold improvements are amortized over the lives of the respective leases or the estimated useful life of the leasehold improvement, whichever is less. Software is amortized over its estimated useful life ranging from three to seven years. Depreciation and amortization are recorded on the straight-line method.

Costs of maintenance and repairs are charged to expense as incurred. Costs of replacing structural parts of major units are considered individually and are expensed or capitalized as the facts dictate. Gains and losses on routine dispositions are reflected in current operations.

Other Real Estate Owned

Other real estate owned (OREO) consists of properties obtained through a foreclosure proceeding or through an in-substance foreclosure in satisfaction of loans and properties originally acquired for branch expansion but no longer intended to be used for that purpose. OREO is reported at the lower of cost or fair value less costs to sell, determined on the basis of current appraisals, comparable sales, and other estimates of fair value obtained principally from independent sources, adjusted for estimated selling costs. Management also considers other factors or recent developments, such as changes in absorption rates or market conditions from the time of valuation and anticipated sales values considering management’s plans for disposition, which could result in adjustments to the collateral value estimates indicated in the appraisals. Significant judgments and complex estimates are required in estimating the fair value of other real estate, and the period of time within which such estimates can be considered current is significantly shortened during periods of market volatility. In response to market conditions and other economic factors, management may utilize liquidation sales as part of its distressed asset disposition strategy. As a result of the significant judgments required in estimating fair value and the variables involved in different methods of disposition, the net proceeds realized from sales transactions could differ significantly from appraisals, comparable sales, and other estimates used to determine the fair value of other real estate. Management reviews the value of other real estate each quarter and adjusts the values as appropriate. Revenue and expenses from operations and changes in the valuation allowance are included in other real estate owned expenses.

Bank-Owned Life Insurance

The Company owns insurance on the lives of a certain group of key employees. The policies were purchased to help offset the increase in the costs of various fringe benefit plans, including healthcare. The cash surrender value of these policies is included as an asset on the consolidated balance sheets, and any increase in cash surrender value is recorded as other income on the consolidated statements of operations. In the event of the death of an insured individual under these policies, the Company would receive a death benefit which would be recorded as other income.

Transfers of Financial Assets

Transfers of financial assets, including loan participations, are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before maturity.

Income Taxes

The Company accounts for income taxes in accordance with ASC Topic 740, “Income Taxes”. Under this guidance, deferred taxes are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates that will apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized as income or expense in the period that includes the enactment date. See Note 10 for details on the Company’s income taxes.

The Company regularly reviews the carrying amount of its net deferred tax assets to determine if the establishment of a valuation allowance is necessary. If based on the available evidence, it is more likely than not that all or a portion of the Company’s net deferred tax assets will not be realized in future periods, a deferred tax valuation allowance would be established. Consideration is given to various positive and negative factors that could affect the realization of the deferred tax assets. In evaluating this available evidence, management considers, among other things, historical performance, expectations of future earnings, the ability to carry back losses to recoup taxes previously paid, length of statutory carry forward periods, experience with utilization of operating loss and tax credit carry forwards not expiring, tax planning strategies and timing of reversals of temporary differences. Significant judgment is required in assessing future earnings trends and the timing of reversals of temporary differences. The Company’s evaluation is based on current tax laws as well as management’s expectations of future performance.

When tax returns are filed, it is highly certain that some positions taken would be sustained upon examination by the taxing authorities, while others are subject to uncertainty about the merits of the position taken or the amount of the position that would be ultimately sustained. The benefit of a tax position is recognized in the financial statements in the period during which, based on all available evidence, management believes it is more likely than not that the position will be sustained upon examination, including the resolution of appeals or litigation processes, if any. Tax positions taken are not offset or aggregated with other positions. Tax positions that meet the more-likely-than-not recognition threshold are measured as the largest amount of tax benefit that is more than 50 percent likely of being realized upon settlement with the applicable taxing authority. The portion of the benefits associated with tax positions taken that exceeds the amount measured as described above is reflected as a liability for unrecognized tax benefits in the accompanying consolidated balance sheet along with any associated interest and penalties that would be payable to the taxing authorities upon examination. There was no liability for unrecognized tax benefits as of December 31, 2013 and 2012. Interest and penalties associated with unrecognized tax benefits, if any, are classified as additional income taxes in the consolidated statement of operations.

Wealth Management Department

Securities and other property held by the Wealth Management Department in a fiduciary or agency capacity are not assets of the Company and are not included in the accompanying consolidated financial statements.

Earnings Per Common Share

Basic earnings per common share represents income available to common shareholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per common share reflects additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustment to income that would result from the assumed issuance. There are no potential common shares that would have a dilutive effect. Shares not committed to be released under the Company’s leveraged Employee Stock Ownership Plan (ESOP) are not considered to be outstanding. See Note 12 for further information on the Company’s ESOP. The average number of common shares outstanding used to calculate basic and diluted earnings per common share were 4,901,464, 3,944,506 and 2,953,344 for the years ended December 31, 2013, 2012 and 2011, respectively.

Advertising Costs

The Company follows the policy of charging the production costs of advertising to expense as incurred. Total advertising expense incurred for 2013, 2012 and 2011 was $269 thousand, $364 thousand and $368 thousand, respectively.

Comprehensive Income (Loss)

Accounting principles generally require that recognized revenue, expenses, gains, and losses be included in net income. Although certain changes in assets and liabilities, such as unrealized gains and losses on available-for-sale securities and pension liability adjustments, are reported as a separate component of the equity section of the consolidated balance sheets, such items, along with net income, are components of comprehensive income (loss).

Reclassifications

Certain reclassifications have been made to prior period balances to conform to the current year presentation. These reclassifications were immaterial.

Recent Accounting Pronouncements

In February 2013, the FASB issued ASU 2013-02, “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income.” The amendments in this ASU require an entity to present (either on the face of the statement where net income is presented or in the notes) the effects on the line items of net income of significant amounts reclassified out of accumulated other comprehensive income. In addition, the amendments require a cross-reference to other disclosures currently required for other reclassification items to be reclassified directly to net income in their entirety in the same reporting period. Companies should apply these amendments for fiscal years, and interim periods within those years, beginning on or after December 15, 2012. The Company has included the required disclosures from ASU 2013-02 in the consolidated financial statements.

In July 2013, the FASB issued ASU 2013-11, “Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists.” The amendments in this Update provide guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, similar tax loss, or tax credit carryforward exists. An unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except as follows. To the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The amendments in this ASU are effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption is permitted. The amendments should be applied prospectively to all unrecognized tax benefits that exist at the effective date. Retrospective application is permitted. The adoption of the new guidance is not expected to have a material impact on the Company’s consolidated financial statements.

In January 2014, the FASB issued ASU 2014-04, “Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (a consensus of the FASB Emerging Issues Task Force).” The amendments in this ASU clarify that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosure of both (1) the amount of foreclosed residential real estate property held by the creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The amendments in this ASU are effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. The Company is currently assessing the impact that ASU 2014-04 will have on its consolidated financial statements.