M-tron Industries, Inc. (MPTI) has 4 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 1 sales totalling $104K. Most recent filing: Aug. 19, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
|---|---|---|---|---|---|---|
| Aug. 19, 2026 filed Aug. 11, 2026 | Biles Linda M Executive VP - Finance | −$103,591 | 1,218 | −4% | No | |
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| Aug. 5, 2026 filed March 19, 2026 | Pforr Cameron CEO and CFO | $0 | 3,805 | +14% | No | |
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| Aug. 5, 2026 filed March 19, 2026 | Biles Linda M Executive VP - Finance | $0 | 1,565 | +6% | No | |
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| Aug. 5, 2026 filed March 19, 2026 | Drafts William Arnold President | $0 | 2,840 | +21% | No | |
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Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.
Real-time Telegram alerts the moment a Form 4 is filed. Filings shown here are delayed by 72 hours.
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