8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of report (Date of earliest event reported): February 10, 2026

Insteel Industries Inc.

(Exact Name of Registrant as Specified in Charter)

1373 Boggs Drive

Mount Airy, North Carolina 27030

(Address of Principal Executive Offices, and Zip Code)

(336) 786-2141

Registrant’s Telephone Number, Including Area Code

(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 (see General Instruction A.2. below):

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 (17 CFR §230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §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 5.07. Submission of Matters to a Vote of Security Holders

Insteel Industries Inc. (the “Company”) held its 2026 Annual Meeting of Shareholders (the “Annual Meeting”) on February 10, 2026. Set forth below is a brief description of each item submitted to a vote of the shareholders at the Annual Meeting and the final voting results for each item. A more complete description of each item is set forth in the Company’s proxy statement for the Annual Meeting, which was filed with the U.S. Securities and Exchange Commission on January 2, 2026.

Item Number One – Election of Directors

Each of the three nominees named in the proxy statement for the Annual Meeting were elected by the shareholders to the Board based on the following vote:

Directors Boxley and Lloyd were elected to three-year terms ending at the 2029 Annual Meeting of Shareholders. Director Zernikow was elected for a one-year term ending at the 2027 Annual Meeting of Shareholders.

Item Number Two – Advisory Vote on the Compensation of the Company’s Executive Officers

The compensation of the Company’s executive officers was approved, on an advisory basis, by the shareholders based on the following vote:

Item Number Three – Ratification of the Appointment of Grant Thornton LLP

The appointment of Grant Thornton LLP as the Company’s independent registered public accounting firm for the Company’s fiscal year ending October 3, 2026 was ratified by the shareholders based on the following vote:

Item 9.01. Financial Statements and Exhibits

Exhibit 104         Cover Page Interactive Data File (embedded within 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 thereunto duly authorized.

INSTEEL INDUSTRIES INC.