908 Devices Inc. (MASS) has 18 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 15 sales totalling $4.4M. Most recent filing: Sept. 17, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
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| Sept. 17, 2026 filed Sept. 15, 2026 | Kenneweg John SVP, Sales & Product Marketing | — | 0 | — | Yes | |
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| Sept. 4, 2026 filed Sept. 2, 2026 | Brown Christopher D. Director | −$317,400 | 30,000 | −4% | Yes | |
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| Aug. 27, 2026 filed Aug. 25, 2026 | Griffith Joseph H. IV Chief Financial Officer | −$125,476 | 11,459 | −9% | Yes | |
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| Aug. 24, 2026 filed Aug. 20, 2026 | AWM Investment Company, Inc. 10% Owner | −$529,797 | 50,000 | −1% | No | |
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| Aug. 17, 2026 filed Aug. 13, 2026 | Knopp Kevin J. President and CEO | −$283,677 | 27,622 | −5% | Yes | |
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Showing the 5 most recent of 18 filings in the last 90 days.
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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