Linda M. Biles - 11 Aug 2026 Form 4 Insider Report for M-tron Industries, Inc. (MPTI)

Reporting relationship: Executive VP - Finance
Issuer ticker: MPTI
Reported as of: 11 Aug 2026
Net transaction value: +$103,591
SEC form: 4
Accepted by SEC: 19 Aug 2026, 16:32:35 UTC
Prior SEC filing: 06 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Linda M. Biles

Key filing fact

Linda M. Biles filed Form 4 for M-tron Industries, Inc. (MPTI) on 19 Aug 2026.

Key facts

This page summarizes Linda M. Biles's Form 4 filing for M-tron Industries, Inc. (MPTI).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 19 Aug 2026, 16:32.

Change

Previous filing in this sequence was filed on 06 May 2026.
Current net transaction value: +$103,591.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001823023 Primary reporting owner

Biles Linda M

Relationship: Executive VP - Finance
Address: 2525 SHADER RD, ORLANDO
Signature: /s/ Linda M. Biles
Signature date: 19 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MPTI transaction

Common Stock

Sale

Transaction value: $103,591
Shares: +1,218
Change %: +4.4%
Price: $85.05
Shares after: 28,723
Date: 11 Aug 2026
Ownership: Direct
Footnotes: F1, F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MPTI holding Derivative

Stock Option (right to buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 10,000
Date: 11 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 10,000
Exercise price: $40.32
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Represents shares sold to cover tax withholding obligations in connection with the vesting of a restricted stock award.

Footnote F2

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.62 to $85.44, inclusive. The shares were sold pursuant to Rule 144 under the Securities Act of 1933, as amended, and a Form 144 was filed in connection with such sale. The reporting person undertakes to provide to the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F3

Stock options of the Issuer vesting as follows: 30% on 4/4/2026, 30% on 4/4/2027, and 40% on 4/4/2028.