Other Events. On August 12, 2026, the Board of Directors of the Company declared a quarterly cash dividend of $0.17 per common share, which is p ayable on September 11, 2026 to shareholders of record as of August 28, 2026.

above. Exhibit No. Description 99.1 Press Release dated July 29 , 2 026 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. FIRST NATIONAL CORPORATION (Registrant) Date: July 29, 2026 By: /s/ Brad E. Schwartz Brad E. Schwartz Executive Vice President and Chief…

Other Events. Dividend Declaration On May 13, 2026, the Board of Directors of the Company declared a quarterly cash divi dend of $0.17 per common share, which is p ayable on June 12, 2026, to shareholders of record as of May 29, 2026. Election of New Chair and Vice Chair of the Board On May 13, 2026, Board of Directors of the Company elected Gerald F. Smith, Jr. as Chair of the Board of Directors and James R. Wilkins, III as Vice Chair immediately following the Company’s Annual Meeting of Sha…

is to be considered “furnished” pursuant to Form 8-K and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities under that Section, nor shall it be deemed incorporated by reference into any of the Company’s reports or filings under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such report or filing. The filing of this C…

above. Exhibit No. Description 99.1 Press Release dated April 30, 2 026 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. FIRST NATIONAL CORPORATION (Registrant) Date: April 30, 2026 By: /s/ Brad E. Schwartz Brad E. Schwartz Executive Vice President and Chie…

Other Events. On February 11, 2026, the Board of Directors of the Company declared a quarterly cash dividend of $0.17 per common share, which is payable on March 13, 2026, to shareholders of record as of February 27, 2026.

above. Exhibit No. Description 99.1 Press Release dated January 29, 2 026 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. FIRST NATIONAL CORPORATION (Registrant) Date: January 29, 2026 By: /s/ Brad E. Schwartz Brad E. Schwartz Executive Vice President and…

Other Events. On November 12, 2025, the Board of Directors of the Company declared a quarterly cash dividend of $0.17 per common share, which is payable on December 12, 2025, to shareholders of record as of November 28, 2025.

above. Exhibit No. Description 99.1 Press Release dated October 30, 2 025 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. FIRST NATIONAL CORPORATION (Registrant) Date: October 30, 20 25 By: /s/ Brad E. Schwartz Brad E. Schwartz Executive Vice President and…

Other Events. On August 13, 2025, the Board of Directors of the Company declared a quarterly cash dividend of $0.155 per common share, which is p ayable on September 12, 2025 to shareholders of record as of August 29, 2025.

above. Exhibit No. Description 99.1 Press Release dated July 30, 2025 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. FIRST NATIONAL CORPORATION (Registrant) Date: July 30, 2025 By: /s/ Brad E. Schwartz Brad E. Schwartz Executive Vice President and Chief F…

is to be considered “furnished” pursuant to Form 8-K and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities under that Section, nor shall it be deemed incorporated by reference into any of the Company’s reports or filings under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such report or filing. The filing of this C…

above. Exhibit No. Description 99.1 Press Release dated April 30, 2025 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. FIRST NATIONAL CORPORATION (Registrant) Date: April 30, 2025 By: /s/ Brad E. Schwartz Brad E. Schwartz Executive Vice President and Chief…

Chief Financial Officer — Brad E. Schwartz: The company appointed Brad E. Schwartz as the new Chief Financial Officer, effective March 31, 2025.

Other Events. On February 12, 2025, the Board of Directors of the Company declared a quarterly cash dividend of $0.155 per common share, which is payable on March 14, 2025 to shareholders of record as of February 28, 2025.

above. Exhibit No. Description 99.1 Press Release dated February 6, 2025 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. FIRST NATIONAL CORPORATION (Registrant) Date: February 6, 2025 By: /s/ Bruce E. Thomas Bruce E. Thomas Senior Vice President and Interi…

Other Events. On November 13, 2024, the Board of Directors of the Company declared a quarterly cash dividend of $0.155 per common share, which is payable on December 13, 2024 to shareholders of record as of November 29, 2024.

Chief Financial Officer — M. Shane Bell: Mr. Bell resigned to pursue another business opportunity.

above. Exhibit No. Description 99.1 Press Release dated November 1, 2024 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. FIRST NATIONAL CORPORATION (Registrant) Date: November 6, 2024 By: /s/ M. Shane Bell M. Shane Bell Executive Vice President and Chief F…

Completion of Acquisition or Disposition of Assets. Effective October 1, 2024, First National Corporation (the “Company” or “First National”), completed its previously announced merger with Touchstone Bankshares, Inc. (“Touchstone”), pursuant to that certain Agreement and Plan of Merger, dated as of March 25, 2024 (the “Merger Agreement”), by and between the Company and Touchstone, whereby Touchstone Bankshares, Inc. merged with and into First National Corporation (the “Merger”), with First N…

Director — Ms. Toni T. Lee-Andrews, Messrs. William S. Wilkinson and Norman D. Wagstaff, Jr.: Three new directors were appointed following a merger.

is to be considered “furnished” pursuant to Form 8-K and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities under that Section, nor shall it be deemed incorporated by reference into any of the Company’s reports or filings under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such report or filing. The filing of this C…

Other Events. On August 14, 2024, the Board of Directors of the Company declared a quarterly cash dividend of $0.15 per common share, which is payable on September 13, 2024 to shareholders of record as of August 30, 2024.

above. Exhibit No. Description 99.1 Press Release dated July 31, 2024 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. FIRST NATIONAL CORPORATION (Registrant) Date: August 1, 2024 By: /s/ M. Shane Bell M. Shane Bell Executive Vice President and Chief Financ…

Other Events. On May 8, 2024, the Board of Directors of the Company declared a quarterly cash dividend of $0.15 per common share, which is p ayable on June 7, 2024, to shareholders of record as of May 24, 2024.