8-K

UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

National Bankshares Inc.

(Exact name of Registrant as Specified in Its Charter)

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐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))

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01 Other Events.

On November 13, 2025, National Bankshares, Inc. issued a press release announcing payment of a semi-annual cash dividend of $0.78 per share on December 1, 2025 to stockholders of record as of November 24, 2025.

A copy of the press release is attached as Exhibit 99.1.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

99.1 National Bankshares, Inc. Press Release, dated November 13, 2025.

104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

EX-99.1

FOR IMMEDIATE RELEASE

CONTACTS:

LARA E. RAMSEY, PRESIDENT & CEO

(540) 951-6250 lramsey@nbbank.com

LORA JONES, TREASURER & CFO

(540) 951-6238 ljones@nbbank.com

NATIONAL BANKSHARES, INC. DECLARES SEMI-ANNUAL DIVIDEND

BLACKSBURG, VA, NOVEMBER 13, 2025: The Board of Directors of National Bankshares, Inc. (NASDAQ Capital Market: NKSH) today approved payment on December 1, 2025 of a semi-annual dividend of $0.78 per share to all stockholders of record as of November 24, 2025. President and CEO Lara E. Ramsey commented, “National Bankshares is proud to offer our shareholders another good dividend payment for the second half of 2025. We are encouraged by improved earnings and the positive impacts of our branch expansion and technology upgrades this year, and we are committed to translating these successes into enhanced shareholder value.”

About National Bankshares

National Bankshares, Inc., headquartered in Blacksburg, Virginia, is the parent company of The National Bank of Blacksburg, which does business as National Bank, and of National Bankshares Financial Services, Inc. National Bank is a community bank operating from 28 full-service offices in southwestern, western, and central Virginia, and one loan production office in Charlottesville, Virginia. National Bankshares Financial Services, Inc. is an investment and insurance subsidiary in the same trade area. The Company’s stock is traded on the Nasdaq Capital Market under the symbol “NKSH.” Additional information is available at www.nationalbankshares.com.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. In some cases, forward-looking statements can be identified by use of words such as “may,” “will,” “anticipates,” “believes,” “expects,” “plans,” “estimates,” “potential,” “continue,” “should,” and similar words or phrases. These statements are based upon current and anticipated economic conditions, nationally and in the Company’s market, interest rates and interest rate policy, competitive factors, and other conditions which by their nature, are not susceptible to accurate forecast and are subject to significant uncertainty. Although we believe that our expectations with respect to forward-looking statements are based upon reasonable assumptions within the bounds of our existing knowledge of our business and operations, there can be no assurance that actual future results, performance, achievements, or trends will not differ materially from any projected future results, performance, achievements or trends expressed or implied by such forward-looking statements. Actual future results, performance, achievements or trends may differ materially from historical results or those anticipated depending on a variety of factors, including, but not limited to, the following: the level of inflation; interest rates; national and local economic conditions; monetary and fiscal policies of the U.S. Government, including policies of the U.S. Treasury, the Office of the Comptroller of the Currency, the Board of Governors of the Federal Reserve System, the Consumer Financial Protection Bureau and the Federal Deposit Insurance Corporation, and the impact of any policies or programs implemented pursuant to financial reform legislation; unanticipated increases in the level of unemployment in the Company’s market; the quality or composition of the loan and/or investment portfolios; the sufficiency of the Company’s allowance for credit losses; demand for loan products; deposit flows, including impact on liquidity; competition; demand for financial services in the Company’s market; the real estate market conditions in the Company’s market; laws, regulations and policies impacting financial institutions; adverse developments in the financial industry generally, such as the recent bank failures, responsive measures to mitigate and manage such developments, related supervisory and regulatory actions and costs, and related impacts on customer behavior; technological risks and developments, and cyber-threats, attacks or events; the Company’s technology initiatives; geopolitical conditions, including acts or threats of terrorism and/or military conflicts, or actions taken by the U.S. or other governments in response to acts or threats of terrorism and/or military conflicts; the occurrence of significant natural disasters, including severe weather conditions, floods, and other catastrophic events; the Company's ability to identify, attract, and retain experienced management, relationship managers, and support personnel, particularly in a competitive labor environment; performance by the Company’s counterparties

or vendors; applicable accounting principles, policies and guidelines; the impact of public health events, including the adverse impact on our business and operations and on our customers; and other factors described from time to time in the Company’s reports (such as our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q and Current Reports on Form 8-K) filed with the Securities and Exchange Commission. These risks and uncertainties should be considered in evaluating forward-looking statements and undue reliance should not be placed on such statements. The Company does not undertake, and specifically disclaims any obligation, to publicly release the result of any revisions which may be made to any forward-looking statements to reflect events or circumstances after the date of such statements or to reflect the occurrence of anticipated or unanticipated events.