Exhibit 99.1

FIRST NATIONAL CORPORATION REPORTS RECORD FOURTH QUARTER AND ANNUAL 2025 EARNINGS

STRASBURG, Va., January 29, 2026 --- First National Corporation (the “Company” or “First National”) (NASDAQ: FXNC), the bank holding company of First Bank (the “Bank”), reported consolidated net income of $5.5 million and basic and diluted earnings per common share of $0.61 for the fourth quarter of 2025.  For the year ended December 31, 2025, the Company reported consolidated earnings of $17.7 million and basic and diluted earnings per common share of $1.97 and $1.96, respectively, and adjusted operating earnings(1) of $19.1 million and adjusted basic and diluted earnings per common share(1) of $2.13 and $2.12, respectively, for the year ended December 31, 2025.

“We are pleased to report a record fourth quarter of financial performance, as well as a record year. We spent 2025 integrating the Touchstone family and operations into our company, with a major focus on customer retention. The addition of experienced bankers in our Richmond, Roanoke, and Staunton markets helped support our net loan growth in the fourth quarter. We delivered a strong return to our shareholders as we increased our quarterly dividend in the fourth quarter 9.7% and grew our per share tangible book value 14% - all of which helped drive a stock price increase of 9.7% for the year. We are extremely pleased to deliver a double-digit return for our shareholders in 2025.” said Scott C. Harvard, President and Chief Executive Officer of First National.

FINANCIAL HIGHLIGHTS FOR FOURTH QUARTER 2025

NET INTEREST INCOME

For the fourth quarter of 2025, the Company’s net interest margin (FTE)(1) was 3.95%, compared to 3.84% for the third quarter of 2025 and 3.83% in the fourth quarter of 2024. The Company’s net interest margin (FTE)(1) for the fourth quarter of 2025 includes the impact of acquisition accounting fair value adjustments. Net accretion income related to acquisition accounting was $201 thousand, a 4-basis point incremental increase to the net interest margin for the fourth quarter ended December 31, 2025. Net accretion income related to acquisition accounting was $1.1 million for the year ended December 31, 2025, a 6-basis point incremental increase to the net interest margin. 

The quarterly impact of acquisition accretion and amortization in 2025 is reflected in the following table (dollars in thousands):

The Company recorded a $951 thousand provision for credit losses in the fourth quarter of 2025, compared to $193 thousand for the third quarter of 2025. The fourth quarter provision was comprised of a $923 thousand provision for credit losses on loans, and a $28 thousand provision for credit losses on unfunded commitments.  Net charge-offs totaled $651 thousand in the fourth quarter of 2025, compared to net charge-offs of $939 thousand in the third quarter of 2025 and net charge-offs of $1.33 million in the fourth quarter of 2024.

The allowance for credit losses on loans totaled $14.7 million, or 1.02% of total loans on December 31, 2025, compared to $14.4 million, or 1.01% of total loans on September 30, 2025, and $16.4 million, or 1.12% of total loans on December 31, 2024. The increase in allowance for credit losses from the prior period is primarily due to increased pooled loan balances as well as three new loans with specific reserves on individually analyzed loans added in the fourth quarter. The decrease in allowance for credit losses from the fourth quarter of 2024 was driven by lower individually analyzed loans balances following charge-offs recorded in 2025. The allowance for credit losses to NPA coverage increased to 316% on December 31, 2025, compared to 253% on September 30, 2025, and to 231% on December 31, 2024. 

NONINTEREST INCOME AND EXPENSE

Non-interest income increased $518 thousand to $5.0 million for the fourth quarter of 2025 from $4.5 million in the prior quarter.  Non-interest income increased 11.5% in the fourth quarter primarily due to increases in other income from the $895 thousand recovery from an acquired loan that was charged off prior to the acquisition of Touchstone. This increase in other income was offset by decreases in ATM and check card income, decreases in fees for other customer services, and no bargain purchase gain recognized compared to the prior quarter. 

Adjusted noninterest income(1), which excludes the bargain purchase gain ($304 thousand in the third quarter of 2025) and loan recovery ($895 thousand in the fourth quarter of 2025), decreased $73 thousand to $4.1 million for the fourth quarter of 2025 from $4.2 million in the prior quarter, due to nominal decreases in ATM and check card income and fees for other customer services.

Noninterest expense increased $343 thousand to $16.1 million for the fourth quarter of 2025 from $15.8 million in the prior quarter. Merger expense increased due to the one-time early lease termination for the now closed Raleigh loan production office acquired in the Touchstone merger. The Company is currently reviewing our total office footprint with plans to further improve operating leverage.

Adjusted operating noninterest expense(1), which excludes the Raleigh LPO lease termination ($127 thousand in the fourth quarter of 2025) and amortization of intangible assets ($442 thousand in the fourth quarter of 2025 and $442 thousand in the third quarter of 2025), increased $216 thousand to $15.6 million for the fourth quarter of 2025 from $15.3 million in the prior quarter, due to increases in equipment and other operating expense.

INCOME TAXES

Income tax expense was $1.39 million for the fourth quarter of 2025, compared to $1.27 million for the third quarter of 2025.  The effective tax rate of 20.2% for the fourth quarter of 2025 increased from the 18.6% in the third quarter of 2025.  This increased effective tax rate in the fourth quarter was driven by additional income tax expense of $78 thousand related to an adjustment to deferred tax assets related to the Touchstone acquisition partially offset by the final state tax refund for Touchstone.  Tax expense and the related effective tax rate for the third quarter of 2025 were reduced due to the $304 thousand adjustment to the bargain purchase gain related to the final Touchstone federal tax filing. 

On December 31, 2025, total investments were $326.0 million, an increase of $20.5 million or 6.7% from September 30, 2025, and an increase of $48.7 million or 17.6% from December 31, 2024. Available for sale ("AFS") securities totaled $217.5 million on December 31, 2025, and $196.5 million on September 30, 2025, and $163.8 million on December 31, 2024. The increases compared to the prior quarters were driven by security purchases exceeding portfolio cashflows. Total net unrealized losses on the AFS securities portfolio were $14.8 million on December 31, 2025, compared to $15.4 million on September 30, 2025, and $22.1 million on December 31, 2024. Held to maturity securities are carried at amortized cost and totaled $103.0 million on December 31, 2025, $104.6 million on September 30, 2025, and $109.8 million on December 31, 2024.

LIQUIDITY

ASSET QUALITY

Overall NPAs improved over the previous period and previous year as previously reserved loans were charged off in the fourth quarter of 2025.  Management classifies NPAs as non-accrual loans and other real estate owned ("OREO"). NPAs as a percentage of total loans declined to 0.32% on December 31, 2025, down from 0.40% on September 30, 2025, and down from 0.48% on December 31, 2024.  NPAs decreased by $1.0 million to $4.7 million on December 31, 2025, compared to $5.7 million on September 30, 2025, and $7.1 million on December 31, 2024.

There were no loans past due over 90 days or more and still accruing interest on December 31, 2025, compared to $388 thousand on September 30, 2025, and $365 thousand on December 31, 2024. Loans past-due 30-89 days and still accruing interest increased to $3.8 million, or 0.26% of total loans on December 31, 2025, compared to $3.6 million, or 0.25% of total loans on September 30, 2025, and $3.1 million, or 0.21%, of total loans on December 31, 2024.  The health care provider portfolio continues to decline with $10.0 million in loan balances and $4.1 million in unamortized premiums, with $2.1 million on non-accrual which include specific reserves of $1.6 million. 

CAPITAL

During the fourth quarter of 2025, the Company declared and paid cash dividends of $0.17 per common share, compared to $0.155 in the third quarter of 2025 and $0.155 in the fourth quarter of 2024. Tangible book value per share(1) grew to $18.83 at December 31, 2025, from $18.26 per share at September 30, 2025, and $16.55 at December 31, 2024 primarily due to earnings and improvements in unrealized losses on available for sale securities, less dividends and corporate expenses paid.

The following table provides capital ratios and values for the periods ended:

During the fourth quarter of 2025, the Company redeemed $13 million in subordinated debt, at par, including redemptions on October 1, 2025 ($5 million) and November 15, 2025 ($8 million). There was no gain or loss recognized on these redemptions. These capital redemptions had minimal impact on the total risk-based capital ratio and should position the Company for improved profitability in future periods.

NON-GAAP FINANCIAL MEASURES

In addition to financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), the Company uses certain non-GAAP financial measures that provide useful information for financial and operational decision making, evaluating trends, and comparing financial results to other financial institutions. The non-GAAP financial measures presented in this document include adjusted operating net income, adjusted operating non-interest expense, adjusted operating non-interest income, adjusted basic and diluted earnings per share, adjusted return on average assets, adjusted return on average equity, pre-provision pre-tax earnings, adjusted pre-provision pre-tax earnings, fully taxable equivalent interest income, the net interest margin, the efficiency ratio, tangible book value per share, and tangible common equity to tangible assets.

The Company believes certain non-GAAP financial measures enhance the understanding of its business and performance. Non-GAAP financial measures are supplemental and not a substitute for, or more important than, financial measures prepared in accordance with GAAP and may not be comparable to those reported by other financial institutions. A reconciliation of non-GAAP financial measures to the most directly comparable GAAP financial measure is included at the end of this release.

FORWARD-LOOKING STATEMENTS

Certain information contained in this discussion may include “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements relate to the Company’s plans, objectives, expectations and intentions and other statements that are not historical facts, and other statements identified by words such as “believes,” “expects,” “anticipates,” “estimates,” “intends,” “plans,” “targets,” "will," "continue," and “projects,” as well as similar expression. Although the Company believes that its expectations with respect to the forward-looking statements are based upon reliable assumptions within the bounds of its knowledge of its business and operations, there can be no assurance that actual results, performance, or achievements will not differ materially from any future results, performance or achievements expressed or implied by such forward-looking statements. Forward-looking statements are subject to a number of risks and uncertainties. For details on factors that could affect expectations, future events, or results, see the risk factors and other cautionary language included in First National’s Annual Report on Form 10-K for the year ended December 31, 2024, most recent Quarterly Report on Form 10-Q and other filings with the Securities and Exchange Commission (the “SEC”).

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FIRST NATIONAL CORPORATION

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