M-tron Industries, Inc. (MPTI) · Insider trading
What M-tron Industries's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$204,228
3 insiders, 0% under a plan
Net, 12 months
−$204,228
bought less sold
Latest filing
2026-08-19
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Gabelli Mario J10% owner | – | $529,695 | 2 | 2024-11-14 | 126,471 |
| Biles Linda MExecutive VP - Finance | – | $124,026 | 3 | 2026-08-11 | 28,723 |
| Drafts William ArnoldPresident | $40,500 | $24,108 | 2 | 2026-05-04 | 13,816 |
| Pforr CameronCEO and CFO | – | $56,095 | 1 | 2026-05-04 | 26,806 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-11 | Biles Linda MExecutive VP - Finance | Sale | 1,218 | 85.05 | $103,591 | 28,723 | Form 4 |
| 2026-05-04 | Biles Linda MExecutive VP - Finance | Sale | 306 | 66.78 | $20,435 | 28,376 | Form 4 |
| 2026-05-04 | Pforr CameronCEO and CFO | Sale | 840 | 66.78 | $56,095 | 26,806 | Form 4 |
| 2026-05-04 | Drafts William ArnoldPresident | Sale | 361 | 66.78 | $24,108 | 13,816 | Form 4 |
| 2026-04-14 | Biles Linda MExecutive VP - Finance | Sale | 720 | – | – | 28,682 | Form 4 |
| 2025-06-27 | Drafts William ArnoldPresident | Buy | 1,000 | 40.50 | $40,500 | 11,008 | Form 4 |
| 2024-11-14 | Gabelli Mario J10% owner | Sale | 7,500 | 60.11 | $450,825 | 126,471 | Form 4 |
| 2024-11-13 | Gabelli Mario J10% owner | Sale | 1,500 | 52.58 | $78,870 | 133,971 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
20 × grant or award15 × option exercise7 × gift2 × option exercise1 × shares withheld for tax
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-04-29 | Pforr CameronCEO and CFO | Option exercise M | +220 | 40.32 | 28,186 | Form 4 |
| 2026-04-28 | Pforr CameronCEO and CFO | Option exercise M | +220 | 40.32 | 27,966 | Form 4 |
| 2026-04-27 | Arteaga IvanDirector | Option exercise X | +24 | 59.00 | 1,313 | Form 4 |
| 2026-04-20 | Gabelli MarcDirector | Option exercise X | +3,276 | 59.00 | 45,840 | Form 4 |
| 2026-04-20 | Susanto HendiDirector | Option exercise X | +1,071 | 59.00 | 9,154 | Form 4 |
| 2026-04-14 | Susanto HendiDirector | Option exercise X | +454 | 59.00 | 8,083 | Form 4 |
| 2026-04-10 | Arteaga IvanDirector | Option exercise X | +174 | 59.00 | 1,289 | Form 4 |
| 2026-04-07 | Pforr CameronCEO and CFO | Option exercise X | +100 | 59.00 | 27,746 | Form 4 |
| 2026-04-02 | Drafts William ArnoldPresident | Grant or award A | +2,428 | – | 14,177 | Form 4 |
| 2026-04-02 | Biles Linda MExecutive VP - Finance | Grant or award A | +2,059 | – | 29,402 | Form 4 |
| 2026-04-02 | Pforr CameronCEO and CFO | Grant or award A | +5,646 | – | 27,646 | Form 4 |
| 2026-03-19 | Biles Linda MExecutive VP - Finance | Grant or award A | +1,565 | – | 29,941 | Form 4 |
| 2026-03-19 | Drafts William ArnoldPresident | Grant or award A | +2,840 | – | 16,656 | Form 4 |
| 2026-03-19 | Pforr CameronCEO and CFO | Grant or award A | +3,805 | – | 30,611 | Form 4 |
| 2026-03-19 | Gabelli MarcDirector | Grant or award A | +242 | – | 42,564 | Form 4 |
| 2026-03-19 | Arteaga IvanDirector | Grant or award A | +242 | – | 1,115 | Form 4 |
| 2026-03-19 | Goldman David MDirector | Grant or award A | +242 | – | 2,599 | Form 4 |
| 2026-03-19 | LaPenta Robert V JrDirector | Grant or award A | +242 | – | 4,509 | Form 4 |
| 2026-03-19 | Lazar BelDirector | Grant or award A | +242 | – | 6,845 | Form 4 |
| 2026-03-19 | Mega John SDirector | Grant or award A | +242 | – | 5,586 | Form 4 |
| 2026-03-19 | Susanto HendiDirector | Grant or award A | +242 | – | 7,629 | Form 4 |
| 2026-01-06 | Arteaga IvanDirector | Option exercise X | +35 | 47.50 | 873 | Form 4 |
| 2025-12-23 | Drafts William ArnoldPresident | Option exercise X | +540 | 47.50 | 11,749 | Form 4/A |
| 2025-12-23 | Goldman David MDirector | Option exercise X | +325 | 47.50 | 2,357 | Form 4 |
| 2025-12-23 | Susanto HendiDirector | Option exercise X | +892 | 47.50 | 7,387 | Form 4 |
| 2025-12-22 | Pforr CameronCEO and CFO | Option exercise X | +2,000 | 47.50 | 22,000 | Form 4 |
| 2025-12-19 | Drafts William ArnoldPresident | Option exercise X | +201 | 47.50 | 11,209 | Form 4/A |
| 2025-12-19 | Arteaga IvanDirector | Option exercise X | +72 | 47.50 | 838 | Form 4 |
| 2025-12-18 | Lazar BelDirector | Option exercise X | +1,000 | 47.50 | 6,603 | Form 4 |
| 2025-12-04 | LaPenta Robert V JrDirector | Option exercise X | +306 | 47.50 | 4,267 | Form 4 |
| 2025-08-11 | Biles Linda MExecutive VP - Finance | Shares withheld for tax F | −617 | – | 27,343 | Form 4 |
| 2025-05-28 | LaPenta Robert V JrDirector | Gift G | −750 | – | 3,961 | Form 4 |
| 2025-03-21 | Gabelli MarcDirector | Grant or award A | +402 | – | 42,322 | Form 4 |
| 2025-03-21 | Goldman David MDirector | Grant or award A | +402 | – | 2,032 | Form 4 |
| 2025-03-21 | Arteaga IvanDirector | Grant or award A | +402 | – | 766 | Form 4 |
| 2025-03-21 | LaPenta Robert V JrDirector | Grant or award A | +402 | – | 4,711 | Form 4 |
| 2025-03-21 | Lazar BelDirector | Grant or award A | +402 | – | 5,603 | Form 4 |
| 2025-03-21 | Mega John SDirector | Grant or award A | +402 | – | 5,344 | Form 4 |
| 2025-03-21 | Susanto HendiDirector | Grant or award A | +402 | – | 6,495 | Form 4 |
| 2024-11-19 | Gabelli Mario J10% owner | Gift G | −3,500 | – | 110,171 | Form 4 |
| 2024-11-18 | Gabelli Mario J10% owner | Gift G | −4,000 | – | 113,671 | Form 4 |
| 2024-11-15 | Gabelli Mario J10% owner | Gift G | −8,800 | – | 117,671 | Form 4 |
| 2024-11-08 | Gabelli Mario J10% owner | Gift G | −19,200 | – | 135,471 | Form 4 |
| 2024-11-07 | Gabelli Mario J10% owner | Gift G | −4,000 | – | 154,671 | Form 4 |
| 2024-11-06 | Gabelli Mario J10% owner | Gift G | −4,000 | – | 158,671 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.