| Virginia (State or other jurisdiction of incorporation) | 1-38874 (Commission File Number) | 54-1232965 (IRS Employer Identification No.) | |
| 112 West King Street Strasburg, Virginia (Address of principal executive offices) | 22657 (Zip Code) |
| ☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |
| ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |
| ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |
| Title of each class | Trading Symbol(s) | Name of each exchange on which registered |
| Common Stock, par value $1.25 per share | FXNC | The Nasdaq Stock Market LLC |
| Item 8.01 | Other Events. |
| Item 9.01 | Financial Statements and Exhibits. |
| (d) | Exhibits. |
| Exhibit No. | Description |
| 99.1 | Press Release dated November 13, 2025 |
| | |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |
| | FIRST NATIONAL CORPORATION | ||
| | (Registrant) | | |
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| Date: November 12, 2025 | By: | /s/ Brad E. Schwartz | |
| | | Brad E. Schwartz | |
| | | Executive Vice President and Chief Financial Officer | |
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