Costs Associated with Exit or Disposal Activities The information set forth under

Other Events On August 21, 2026, Insteel Industries Inc. issued a Press Release announcing that its wholly-owned subsidiary, Insteel Wire Products Company (together referred to as “Insteel” or the “Company”), will be closing its facility in Upper Sandusky, Ohio, and moving the manufacturing to the Company’s remaining welded wire reinforcement production facilities. The consolidation of the Company’s welded wire manufacturing operations is expected to result in the elimination of up to 65 posi…

of this Current Report on Form 8-K, including the related information in Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing.

Other Events On May 12, 2026, Insteel Industries Inc. issued a news release announcing that its Board of Directors has declared its regular quarterly cash dividend of $0.03 per share of common stock, payable on June 26, 2026, to shareholders of record as of June 12, 2026. A copy of this release is included as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.

of this Current Report on Form 8-K, including the related information in Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing.

Other Events On February 10, 2026, Insteel Industries Inc. issued a news release announcing that its Board of Directors has declared its regular quarterly cash dividend of $0.03 per share of common stock, payable on March 27, 2026, to shareholders of record as of March 13, 2026. A copy of this release is included as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.

of this Current Report on Form 8-K, including the related information in Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing.

Director — W. Allen Rogers II: The filing discloses routine board turnover involving a director choosing not to stand for re-election and another resigning at the end of their term, with no indication of disagreement or executive management loss.

Other Events On November 11, 2025, Insteel Industries, Inc. issued a news release announcing that its Board of Directors has declared both its regular quarterly cash dividend of $0.03 per share of common stock, and a one-time special cash dividend of $1.00 per share of common stock, both payable on December 12, 2025, to shareholders of record as of November 28, 2025. A copy of this release is included as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.

of this Current Report on Form 8-K, including the related information in Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing.

Other Events On August 19, 2025, Insteel Industries Inc. issued a news release announcing that its Board of Directors has declared its regular quarterly cash dividend of $0.03 per share of common stock, payable on September 26, 2025, to shareholders of record as of September 12, 2025. A copy of this release is included as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.

of this Current Report on Form 8-K, including the related information in Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing.

Other Events On May 22, 2025, Insteel Industries Inc. issued a news release announcing that its Board of Directors has declared its regular quarterly cash dividend of $0.03 per share of common stock, payable on June 27, 2025, to shareholders of record as of June 13, 2025. A copy of this release is included as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.

of this Current Report on Form 8-K, including the related information in Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing.

Director — Eric J. Zernikow: The filing discloses the appointment of a new independent director to expand the board size, which is a routine governance action rather than an executive departure.

The filing discloses the approval of a new equity incentive plan, which is a compensatory arrangement rather than a change in management personnel.

Other Events On February 11, 2025, Insteel Industries Inc. issued a news release announcing that its Board of Directors has declared its regular quarterly cash dividend of $0.03 per share of common stock, payable on March 28, 2025, to shareholders of record as of March 14, 2025. A copy of this release is included as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.

of this Current Report on Form 8-K, including the related information in Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing.

Director — Blake K. Doyle: The filing discloses the appointment of a new independent director to the board, which is a routine governance action and not a departure of a senior executive.

Costs Associated with Exit or Disposal Activities The information set forth under

Other Events On November 18, 2024, Insteel Industries Inc. issued a News Release announcing that its wholly-owned subsidiary, Insteel Wire Products Company (together referred to as “Insteel” or the “Company”), will be closing its facility in Warren, Ohio, and moving the manufacturing to the Company’s remaining welded wire reinforcement production facilities. The consolidation of the Company’s welded wire manufacturing operations is expected to result in the elimination of up to 35 positions a…

Other Events On November 12, 2024, Insteel Industries, Inc. issued a news release announcing that its Board of Directors has declared both its regular quarterly cash dividend of $0.03 per share of common stock, and a one-time special cash dividend of $1.00 per share of common stock, both payable on December 13, 2024, to shareholders of record as of November 29, 2024. A copy of this release is included as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.

Entry into a Material Definitive Agreement. On October 21, 2024, Insteel Industries, Inc., through its wholly-owned subsidiary, Insteel Wire Products Company (together referred to as “Insteel”), entered into an Asset Purchase Agreement (the “Agreement”) pursuant to which it has acquired substantially all of the assets, other than cash and accounts receivable, of Engineered Wire Products, Inc. (“EWP”), a leading manufacturer of welded wire reinforcement products for use in nonresidential and r…

of this Current Report on Form 8-K, including the related information in Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing.

Other Events On August 13, 2024, Insteel Industries Inc. issued a news release announcing that its Board of Directors has declared its regular quarterly cash dividend of $0.03 per share of common stock, payable on September 27, 2024, to shareholders of record as of September 13, 2024. A copy of this release is included as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.