SEC Form 4 · accession 0001437749-26-028543
M-tron Industries, Inc. · MPTI
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Linda M Biles
Officer — Executive VP - Finance
Period of report
Aug 11, 2026
Accepted (ET)
Aug 19, 2026 · 4:32 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001902314
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1,F2 | Aug 11, 2026 | S | 1,218 | $85.05 | A | 28,723 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (right to buy)F3 | $40.32 | holding | — | — | — | Apr 4, 2026 | Apr 4, 2030 | Common Stock | 10,000 | 10,000 | D |
Explanation of responses
- F1Represents shares sold to cover tax withholding obligations in connection with the vesting of a restricted stock award.
- F2The 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.
- F3Stock options of the Issuer vesting as follows: 30% on 4/4/2026, 30% on 4/4/2027, and 40% on 4/4/2028.