The accompanying unaudited consolidated financial statements of First National Corporation (the Company) and its subsidiary, First Bank (the Bank), have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim financial information and in accordance with guidance provided by the Securities and Exchange Commission (SEC). Accordingly, they do not include all of the information and footnotes required by GAAP for annual year-end financial statements. All significant intercompany balances and transactions have been eliminated. In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments and reclassifications of a normal and recurring nature considered necessary to present fairly the financial positions at September 30, 2023 and December 31, 2022, the statements of income and comprehensive income (loss) for the three and nine months ended September 30, 2023 and 2022, the cash flows for the nine months ended September 30, 2023 and 2022, and the changes in shareholders’ equity for the three and nine months ended September 30, 2023 and 2022. The statements should be read in conjunction with the consolidated financial statements and related notes included in the Annual Report on Form 10-K for the year ended December 31, 2022. Operating results for the three and nine months ended September 30, 2023 are not necessarily indicative of the results that may be expected for the year ending December 31, 2023. Certain items in the prior period financial statements have been reclassified to conform to the current presentation. These reclassifications had no effect on prior year net income or shareholders' equity.

Significant Accounting Policies and Estimates

Application of the principles of GAAP and practices within the banking industry requires management to make estimates, assumptions, and judgements that affect the amounts reported in the financial statements and accompanying notes. These estimates, assumptions, and judgements are based on information available as of the date of the financial statements; accordingly, as this information changes, the financial statements may reflect different estimates, assumptions and judgements. Certain policies inherently rely more extensively on the use of estimates, assumptions, and judgements and as such may have a greater possibility of producing results that could be materially different than originally reported. Material estimates that are particularly susceptible to significant changes in the near term include estimates related to the determination of the allowance for credit losses.

The Company’s significant accounting policies followed in the preparation of the unaudited consolidated financial statements are disclosed in Note 1 of the audited financial statements and notes for the year ended December 31, 2022 and are contained in the Company’s 2022 Annual Report on Form 10-K. There have been no significant changes to the application of significant accounting policies since December 31, 2022, except for the following:

ASU 2016-13: On January 1, 2023, the Company adopted Accounting Standards Update (ASU) No. 2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (Accounting Standards Codification (ASC) 326). This standard replaced the incurred loss methodology with an expected loss methodology that is referred to as the current expected credit loss (CECL) methodology. CECL requires an estimate of credit losses for the remaining estimated life of the financial asset using historical experience, current conditions, and reasonable and supportable forecasts and generally applies to financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities, and some off-balance sheet credit exposures such as unfunded commitments to extend credit. Financial assets measured at amortized cost will be presented at the net amount expected to be collected by using an allowance for credit losses.

In addition, CECL made changes to the accounting for available for sale debt securities. One such change is to require credit losses to be presented as an allowance rather than as a write-down on available for sale debt securities if management does not intend to sell and does not believe that it is more likely than not that they will be required to sell.

The Company adopted ASC 326 and all related subsequent amendments thereto effective January 1, 2023 using the modified retrospective approach for all financial assets measured at amortized cost and off-balance sheet credit exposures. The transition adjustment of the adoption of CECL included an increase in the allowance for credit losses on loans of $2.2 million, which is presented as a reduction to net loans outstanding, and an increase in the allowance for credit losses on unfunded commitments of $153 thousand, which is recorded within other liabilities. The Company recorded an allowance for credit losses for held to maturity securities of $132 thousand, which is presented as a reduction to held to maturity securities outstanding. The Company recorded a net decrease to retained earnings of $2.0 million as of January 1, 2023 for the cumulative effect of adopting CECL, which reflects the transition adjustments noted above, net of the applicable deferred tax assets recorded. Results for reporting periods beginning after January 1, 2023 are presented under CECL while prior period amounts continue to be reported in accordance with previously applicable accounting standards.

The Company adopted ASC 326 using the prospective transition approach for purchase credit deteriorated (PCD) assets that were previously classified as purchase credit impaired (PCI) under ASC 310-30. In accordance with the standard, management did not reassess whether PCI assets met the criteria of PCD assets as of the date of adoption. As of September 30, 2023, the Company had no loans classified as PCD.

The Company adopted ASC 326 using the prospective transition approach for debt securities for which other-than-temporary impairment had been recognized prior to January 1, 2023. As of December 31, 2022, the Company did not have any other-than-temporary impaired investment securities. Therefore, upon adoption of ASC 326, the Company determined that an allowance for credit losses on available for sale securities was not required.

The Company elected not to measure an allowance for credit losses for accrued interest receivable and instead elected to reverse interest income on loans or securities that are placed on nonaccrual status, which is generally when the instrument is 90 days past due, or earlier if the Company believes the collection of interest is doubtful. The Company has concluded that this policy results in the timely reversal of uncollectible interest.

The Company estimates expected credit losses on held-to-maturity securities on an individual basis based on a Probability of Default/Loss Given Default (“PD/LGD”) methodology primarily using security-level credit ratings. The primary indicators of credit quality for the Company’s held-to-maturity portfolio are security type and credit ratings, which are influenced by a number of factors including obligor cash flow, geography, seniority, among other factors. The Company’s held-to-maturity securities with credit risk are municipal bonds and corporate debt securities. All other held-to-maturity securities are covered by the explicit or implied guarantee of the United States government or one if its agencies.

Changes in the allowance for credit loss are recorded as provision for (or recovery of) credit losses in the Consolidated Statements of Income. The Company recorded an allowance for credit losses on held-to-maturity securities of $132 thousand upon adoption of ASC 326. During the three months ended September 30, 2023, the Company recorded a recovery of credit losses on held-to-maturity securities of $12 thousand. The allowance for credit losses on held-to-maturity securities was $131 as of September 30, 2023.

Management evaluates all available-for-sale securities in an unrealized loss position on a quarterly basis, and more frequently when economic or market conditions warrant such evaluation. If the Company has the intent to sell the security or it is more likely than not that the Company will be required to sell the security, the security is written down to fair value and the entire loss is recorded in earnings.

If either of the above criteria is not met, the Company evaluates whether the decline in fair value is the result of credit losses or other factors. In making the assessment, the Company may consider various factors including the extent to which fair value is less than amortized cost, downgrades in the ratings of the security by a rating agency, the failure of the issuer to make scheduled interest or principal payments and adverse conditions specific to the security. If the assessment indicates that a credit loss exists, the present value of cash flows expected to be collected are compared to the amortized cost basis of the security and any deficiency is recorded as an allowance for credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any amount of unrealized loss that has not been recorded through an allowance for credit loss is recognized in other comprehensive income.

Changes in the allowance for credit loss are recorded as a provision for (or recovery of) credit losses in the Consolidated Statements of Income. Losses are charged against the allowance for credit loss when management believes an available-for-sale security is confirmed to be uncollectible or when either of the criteria regarding intent or requirement to sell is met. At September 30, 2023, there was no allowance for credit loss related to the available-for-sale portfolio.

Accrued interest receivable on available-for-sale securities totaled $786 thousand at September 30, 2023 and was excluded from the estimate of credit losses.

The allowance for loan credit losses represents an amount which, in management’s judgement, is adequate to absorb the lifetime expected losses that may be sustained on outstanding loans at the balance sheet date based on the evaluation of the size and current risk characteristics of the loan portfolio, past events, current conditions, reasonable and supportable forecasts of future economic conditions, and prepayment experience. The allowance for loan credit losses is measured and recorded upon the initial recognition of a financial asset. The allowance for loan credit losses is reduced by charge-offs, net of recoveries of previous losses, and is increased or decreased by a provision for (or recovery of) credit losses, which is recorded in the Consolidated Statement of Income.

The Company is utilizing a discounted cash flow model to estimate its current expected credit losses. For the purposes of calculating its quantitative reserves, the Company has segmented its loan portfolio based on loans which share similar risk characteristics. Within the quantitative portion of the calculation, the Company utilizes at least one or a combination of loss drivers, which may include unemployment rates, home price indices, and/or gross domestic product (“GDP”), to adjust its loss rates over a reasonable and supportable forecast period of one year. A straight-line reversion technique is used for the following eight quarters, at which time the Company reverts to historical averages. To further adjust the allowance for credit losses for expected losses not already included within the quantitative component of the calculation, the Company may consider qualitative factors, including but not limited to: variability in the economic forecast, changes in volume and severity of adversity classified loans, changes in concentrations of credit, changes in the nature and volume of the loan segments, factors related to credit administration, and other idiosyncratic risks not embedded in the data used in the model.

Loans that do not share risk characteristics are evaluated on an individual basis. The Company designates individually evaluated loans on nonaccrual status as collateral dependent loans, as well as other loans that management of the Company designates as having higher risk and loans for which the repayment is expected to be provided substantially through the operation or sale of the collateral. These loans do not share common risk characteristics and are not included within the collectively evaluated loans for determining the allowance for credit losses. Under CECL, for collateral dependent loans, the Company has adopted the practical expedient to measure the allowance for credit losses based on the fair value of collateral. The allowance for credit losses is calculated on an individual loan basis based on the shortfall between the fair value of the loan’s collateral, which is adjusted for liquidation costs/discounts, and amortized cost. If the fair value of the collateral exceeds the amortized cost, no allowance is required.

The adoption of CECL did not result in a significant change to any other credit risk management and monitoring processes, including identification of past due or delinquent borrowers, nonaccrual practices or charge-off policy.

Financial Instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit issued to meet customer financing needs. The Company’s exposure to credit losses in the event of nonperformance by the other party to the financial instrument for off-balance sheet loan commitments is represented by the contractual amount of those instruments. Such financial instruments are recorded when they are funded.

The Company records all allowance for credit losses on off-balance sheet credit exposures, unless the commitments to extend credit are unconditionally cancelable, through a charge to provision for (or recovery of) credit losses in the Consolidated Statement of Income. The allowances for credit losses on off-balance sheet credit exposures is estimated by loan segment at each balance sheet date under the current expected credit losses model using the same methodology as the loan portfolio, taking into consideration the likelihood that funding will occur as well as any third-party guarantees. The allowance for unfunded commitments is included in other liabilities on the Company’s consolidated balance sheet.

The Company has elected to exclude the accrued interest from the amortized cost basis in its determination of the allowance for credit losses for both loans and held-to-maturity securities, as well as elected the policy to write-off accrued interest receivable directly through the reversal of interest income. Accrued interest receivable totaled $3.1 million on loans and $593 thousand on held-to-maturity securities at September 30, 2023 and is included in “Accrued Interest Receivable” on the Company’s Consolidated Balance Sheets.

On January 1, 2023, the Company adopted ASU 2022-01, "Derivatives and Hedging (Topic 815), Fair Value Hedging—Portfolio Layer Method.” ASU 2022-01 clarifies the guidance in ASC 815 on fair value hedge accounting of interest rate risk for portfolios of financial assets and is intended to better align hedge accounting with an organization’s risk management strategies. In 2017, FASB issued ASU 2017-12 to better align the economic results of risk management activities with hedge accounting. One of the major provisions of that standard was the addition of the last-of-layer hedging method. For a closed portfolio of fixed-rate prepayable financial assets or one or more beneficial interests secured by a portfolio of prepayable financial instruments, such as mortgages or mortgage-backed securities, the last-of-layer method allows an entity to hedge its exposure to fair value changes due to changes in interest rates for a portion of the portfolio that is not expected to be affected by prepayments, defaults, and other events affecting the timing and amount of cash flows. ASU 2022-01 renames that method the portfolio layer method. The Company adopted ASU 2022-01 prospectively and it did not have a material impact on its consolidated financial statements.

ASU 2022-02: On January 1, 2023, the Company adopted ASU 2022-02, "Financial Instruments-Credit Losses (Topic 326), Troubled Debt Restructurings and Vintage Disclosures." ASU 2022-02 addresses areas identified by the FASB as part of its post-implementation review of the credit losses standards (ASU 2016-13) that introduced the CECL model. The amendments eliminate the accounting guidance for troubled debt restructurings (TDRs) by creditors that have adopted the CECL model and enhance the disclosure requirements for certain loan refinancings by creditors when a borrower is experiencing financial difficulty. In addition, the amendments require that the Company disclose current-period gross write-offs for financing receivables and net investment in leases by year of origination in the vintage disclosures. The Company adopted the standard prospectively and it did not have a material impact on the financial statements.

In July 2023, the Financial Accounting Standards Board (FASB) issued ASU 2023-03, “Presentation of Financial Statements (Topic 205), Income Statement—Reporting Comprehensive Income (Topic 220), Distinguishing Liabilities from Equity (Topic 480), Equity (Topic 505), and Compensation—Stock Compensation (Topic 718)”. This ASU amends the FASB Accounting Standards Codification for SEC paragraphs pursuant to SEC Staff Accounting Bulletin No. 120, SEC Staff Announcement at the March 24, 2022 EITF Meeting, and Staff Accounting Bulletin Topic 6.B, Accounting Series Release 280—General Revision of Regulation S-X: Income or Loss Applicable to Common Stock. ASU 2023-03 is effective upon addition to the FASB Codification. The Company does not expect the adoption of ASU 2023-03 to have a material impact on its consolidated financial statements.

In June 2022, the FASB issued ASU 2022-03, “Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions.” ASU 2022-03 clarifies that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security and, therefore, is not considered in measuring fair value. The ASU is effective for fiscal years, including interim periods within those fiscal years, beginning after December 15, 2023. Early adoption is permitted. The Company does not expect the adoption of ASU 2022-03 to have a material impact on its consolidated financial statements.

In March 2023, the FASB issued ASU 2023-01, “Leases (Topic 842): Common Control Arrangements”. These amendments require entities to amortize leasehold improvements associated with common control leases over the useful life to the common control group. The ASU is effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted. If an entity adopts the amendments in an interim period, it must adopt them as of the beginning of the fiscal year that includes that interim period. Transition can be done either retrospectively or prospectively. The Company does not expect the adoption of ASU 2023-01 to have a material impact on its consolidated financial statements.

In March 2023, the FASB issued ASU 2023-02, “Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method”. These amendments allow reporting entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. The ASU is effective for public business entities for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted for all entities in any interim period. The Company does not expect the adoption of ASU 2023-02 to have a material impact on its consolidated financial statements.