SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 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): April 16, 2025

AIR INDUSTRIES GROUP

(Exact Name of Registrant as Specified in its Charter)

1460 Fifth Avenue, Bay Shore, New York 11706

(Address of Principal Executive Offices)

Registrant’s telephone number: (631) 968-5000

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 (§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 4.01 Changes in Registrant’s Certifying Accountant

On April 16, 2025, Air Industries Group (the “Company”) was notified by Marcum LLP (“Marcum”) that Marcum resigned as the Company’s independent registered accounting firm. On November 1 2024, CBIZ CPAs P.C. (“CBIZ CPAs”) acquired the attest business of Marcum. On April 17, 2025, following the approval of the Audit Committee of the Company’s Board of Directors, CBIZ CPAs was engaged, effectively immediately, as the Company’s independent registered public accounting firm for the fiscal year ended December 31, 2025.

During the two years ended December 31, 2024 and through the date Marcum informed the Company of their resignation, neither the Company nor anyone on the Company’s behalf consulted with CBIZ CPAs regarding (i) the application of accounting principles to a specific completed or contemplated transaction or regarding the type of audit opinion that might be rendered by CBIZ CPAs on the Company’s financial statements, and CBIZ CPAs did not provide any written or oral advice that was an important factor considered by the Company in reaching a decision as to any such accounting, auditing, or financial reporting issue or (ii) any matter that was either the subject of a disagreement (as defined in Item 304(a)(1)(iv) of Regulation S-K and the related instructions) as that term is described in Item 304(a)(1)(iv) of Regulation S-K, or a reportable event, as that term is defined in Item 304(a)(1)(v) of Regulation S-K.

Marcum’s reports on the Company’s financial statements for the fiscal years ended December 31, 2024 and 2023 did not contain any adverse opinion or a disclaimer of opinion and were not qualified or modified as to uncertainty, audit scope, or accounting principles except, the reports for the fiscal years ended December 31, 2024, and December 31, 2023, included an explanatory paragraph relating to substantial doubt about the Company’s ability to continue as a going concern.

During the years ended December 31, 2024 and 2023 and through the date on which Marcum advised the Company of their resignation (i) there were no disagreements (as defined in Item 304(a)(1)(v) of Regulation S-K and related instructions) with Marcum on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure, which disagreements, if not resolved to Marcum’s satisfaction, would have caused them to make reference thereto in their reports on the Company’s financial statements for such periods, and (ii) there were no reportable events (as defined in Item 304(a)(1)(v) of Regulation S-K and the related instructions) except for the material weaknesses in the Company’s internal control over financial reporting as reported in Part II, Item 9A of the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024, as filed with the SEC on April 15, 2025, related to the Company: (1) not designing and/or implementing primary user access controls and program change management systems over key IT systems to validate that data produced by the relevant IT systems were complete and accurate and to ensure appropriate segregation of duties to adequately restrict user and privileged access to the financially relevant systems and data to the Company’s personnel, and (2) was unable to verify and validate the effectiveness of the vendor’s control procedures when implementing changes to its IT systems, including systems affecting its financial IT applications and underlying data account records.

Prior to the filing of this Report with the Securities and Exchange Commission, a copy was provided to Marcum and the Company requested that Marcum furnish the Company with a letter addressed to the Securities and Exchange Commission, pursuant to Item 304(a)(3) of Regulation S-K, stating whether or not it agrees with the statements contained herein. A copy of Marcum’s letter, dated April 21, 2025, is attached as Exhibit 16.1 to this Report.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

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.

Dated: April 21, 2025

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