NATIONAL BANKSHARES INC 10-Q

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds None. Item 3. Defaults Upon Senior Securities None. Item 4. Mine Safety Disclosures Not applicable. 38 Table of Contents Item 5. Other I nformation (a) None. (b) None. (c) During the fiscal quarter ended March 31, 2026 , none of the Company’s directors or officers (as defined in Rule 16a-1(f) of the Securities Exchange Act of 1934) adopted or terminated a Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408(a) of Regulation S-K). Item 6. E xhibits Index of Exhibits Exhibit No. Description 3(i) Amended and Restated Articles of Incorporation of National Bankshares, Inc. (incorporated herein by reference to Exhibit 3.1 of the Form 8-K filed on March 16, 2006) 3(ii) Amended and Restated Bylaws of National Bankshares, Inc. (incorporated herein by reference to Exhibit 3.2 of the Form 8-K filed on July 10, 2024) 4 Specimen copy of certificate for National Bankshares, Inc. common stock (incorporated herein by reference to Exhibit 4(a) of the Annual Report on Form 10-K for fiscal year ended December 31, 1993) +31(i) Section 302 Certification of Chief Executive Officer Filed herewith +31(ii) Section 302 Certification of Chief Financial Officer Filed herewith +32(i) 18 U.S.C. Section 1350 Certification of Chief Executive Officer Filed herewith +32(ii) 18 U.S.C. Section 1350 Certification of Chief Financial Officer Filed herewith +101 The following materials from National Bankshares, Inc.’s Quarterly Report on Form 10-Q for the period ended March 31, 2026 are formatted in iXBRL (Inline Extensible Business Reporting Language), furnished herewith: (i) Consolidated Balance Sheets at March 31, 2026 and December 31, 2025; (ii) Consolidated Statements of Income for the three months ended March 31, 2026 and 2025; (iii) Consolidated Statements of Comprehensive Income for the three months ended March 31, 2026 and 2025; (iv) Consolidated Statements of Changes in Stockholders’ Equity for the three months ended March 31, 2026 and 2025; (v) Consolidated Statements of Cash Flows for the three months ended March 31, 2026 and 2025; and (vi) Notes to Consolidated Financial Statements. Filed herewith 104 Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101) Filed herewith 39 Table of Contents Signa tures 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 thereunto duly authorized. NATIONAL BANKSHARES, INC. Date: May 13, 2026 /s/ Lara E. Ramsey By: Lara E. Ramsey President and Chief Executive Officer (Principal Executive Officer) Date: May 13, 2026 /s/ Lora M. Jones By: Lora M. Jones Treasurer and Chief Financial Officer (Principal Financial Officer) (Principal Accounting Officer) 40