MPTI · Insider Trading
M-tron Industries, Inc.
Every open-market purchase and sale reported by MPTI officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-19 | Linda M Biles | Executive VP - Finance | Sell | +1,218 | +$103.59K |
| 2026-08-05 | Linda M Biles | Executive VP - Finance | A | +1,565 | — |
| 2026-08-05 | Cameron Pforr | CEO and CFO | A | +3,805 | — |
| 2026-08-05 | William Arnold Drafts | President | A | +2,840 | — |
| 2026-05-06 | Cameron Pforr | CEO and CFO | Sell | −840 | −$56.10K |
| 2026-05-06 | Linda M Biles | Executive VP - Finance | Sell | −306 | −$20.43K |
| 2026-05-06 | William Arnold Drafts | President | Sell | −361 | −$24.11K |
| 2026-05-04 | Cameron Pforr | CEO and CFO | M | +440 | +$17.74K |
| 2026-04-29 | Linda M Biles | Executive VP - Finance | Sell | — | — |
| 2026-04-29 | Ivan Arteaga | Director | X | +198 | +$11.68K |
| 2026-04-28 | Marc Gabelli | Director | X | +3,276 | +$193.28K |
| 2026-04-28 | William Arnold Drafts | President | Sell | — | — |
| 2026-04-24 | Cameron Pforr | CEO and CFO | X | +100 | +$5.90K |
| 2026-04-23 | Hendi Susanto | Director | X | +1,525 | +$89.97K |
| 2026-04-16 | Linda M Biles | Executive VP - Finance | Sell | −720 | — |
| 2026-04-07 | William Arnold Drafts | President | A | +2,428 | — |
| 2026-04-07 | Cameron Pforr | CEO and CFO | A | +5,646 | — |
| 2026-04-07 | Linda M Biles | Executive VP - Finance | MIXED | +1,442 | — |
| 2026-04-07 | William Arnold Drafts | President | X | +741 | +$35.20K |
| 2026-03-23 | John S Mega | Director | A | +242 | — |
| 2026-03-23 | Bel Lazar | Director | A | +242 | — |
| 2026-03-23 | Ivan Arteaga | Director | A | +242 | — |
| 2026-03-23 | David M Goldman | Director | A | +242 | — |
| 2026-03-23 | Hendi Susanto | Director | A | +242 | — |
| 2026-03-23 | Marc Gabelli | Director | A | +242 | — |
| 2026-03-23 | Robert V LaPenta Jr | Director | A | +242 | — |
| 2026-01-08 | Ivan Arteaga | Director | X | +35 | +$1.66K |
| 2026-01-07 | David M Goldman | Director | X | +325 | +$15.44K |
| 2025-12-31 | Hendi Susanto | Director | X | +892 | +$42.37K |
| 2025-12-30 | Cameron Pforr | CEO and CFO | X | +2,000 | +$95.00K |
| 2025-12-30 | Ivan Arteaga | Director | X | +72 | +$3.42K |
| 2025-12-23 | William Arnold Drafts | President | X | +201 | +$9.55K |
| 2025-12-23 | Robert V LaPenta Jr | Director | X | +306 | +$14.54K |
| 2025-12-23 | Bel Lazar | Director | X | +1,000 | +$47.50K |
| 2025-04-08 | Cameron Pforr | Chief Financial Officer | A | +25,000 deriv. | — |
| 2025-04-08 | William Arnold Drafts | President | A | +12,500 deriv. | — |
| 2025-04-08 | Linda M Biles | EVP Finance | A | +10,000 deriv. | — |
| 2025-04-04 | Cameron Pforr | Chief Financial Officer | A | +20,000 | — |
| 2025-03-31 | Marc Gabelli | Director | A | +402 | — |
| 2025-03-26 | David M Goldman | Director | A | +402 | — |
| 2025-03-25 | John S Mega | Director | A | +402 | — |
| 2025-03-25 | Robert V LaPenta Jr | Director | A | +402 | — |
| 2025-03-25 | Hendi Susanto | Director | A | +402 | — |
| 2025-03-25 | Bel Lazar | Director | A | +402 | — |
| 2025-03-25 | Ivan Arteaga | Director | A | +402 | — |
| 2024-11-20 | Mario J Gabelli | 10%+ Owner | G | −3,500 | — |
| 2024-11-18 | Mario J Gabelli | 10%+ Owner | G | −12,800 | — |
| 2024-11-15 | Mario J Gabelli | 10%+ Owner | Sell | −7,500 | −$450.82K |
| 2024-11-14 | Mario J Gabelli | 10%+ Owner | Sell | −1,500 | −$78.87K |
| 2024-11-12 | Mario J Gabelli | 10%+ Owner | G | −19,200 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Mario J Gabelli | 10%+ Owner | 562,742 | $41.10M |
| Marc Gabelli | Director | 114,161 | $8.34M |
| Cameron Pforr | CEO and CFO | 30,611 | $2.24M |
| Linda M Biles | Executive VP - Finance | 28,723 | $2.10M |
| William Arnold Drafts | President | 16,656 | $1.22M |
| Hendi Susanto | Director | 9,154 | $668.61K |
| Bel Lazar | Director | 6,845 | $499.96K |
| John S Mega | Director | 5,586 | $408.00K |
| Robert V LaPenta Jr | Director | 4,509 | $329.34K |
| David M Goldman | Director | 2,599 | $189.83K |
| Ivan Arteaga | Director | 1,313 | $95.90K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the MPTI quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.