M-tron Industries, Inc.

UNITED STATES

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):November 12, 2025

M-tron Industries, Inc.

(Exact Name of Registrant as Specified in Charter)

(407)298-2000

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:

☐ 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.☐

On November 12, 2025, M-tron Industries, Inc. ("Mtron" or the "Company") reported its financial results for the three and nine months ended September 30, 2025. A copy of the press release containing this information is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Management, including Mtron's Interim Chief Executive Officer, Cameron Pforr, will host a conference call with the investment community on Thursday November 13, 2025, to discuss the Company's third quarter 2025 results and to answer investor questions.

The call will begin at 10:30 am Eastern Time (U.S. and Canada) on Thursday November 13, 2025, and can be accessed using the dial-in details below:

(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.