16 insiders reported 94 Form 4 transactions for 908 Devices Inc. (MASS) over the past 18 months (most recent 2026-08-17). Recent activity: Knopp Kevin J. (President and CEO) Sell 7,622 shares, Knopp Kevin J. (President and CEO) Sell 20,000 shares, Knopp Kevin J. (President and CEO) Sell 348 shares, Brown Christopher D. (Director) Sell 9,442 shares, Knopp Kevin J. (President and CEO) Sell 115,748 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-17 | Knopp Kevin J. | President and CEO | Sell | 7,622 | $76,677 |
| 2026-08-17 | Knopp Kevin J. | President and CEO | Sell | 20,000 | $207,000 |
| 2026-08-12 | Knopp Kevin J. | President and CEO | Sell | 348 | $3,153 |
| 2026-08-12 | Brown Christopher D. | Director | Sell | 9,442 | $85,261 |
| 2026-08-12 | Knopp Kevin J. | President and CEO | Sell | 115,748 | $1.1M |
| 2026-08-12 | Brown Christopher D. | Director | Sell | 8,358 | $77,144 |
| 2026-08-12 | Knopp Kevin J. | President and CEO | Sell | 30,170 | $306,527 |
| 2026-08-12 | Knopp Kevin J. | President and CEO | Sell | 2,747 | $27,662 |
| 2026-08-07 | Brown Christopher D. | Director | Sell | 20,000 | $169,800 |
| 2026-08-06 | AWM Investment Company, Inc. | 10% Owner | Sell | 50,000 | $417,765 |
| 2026-08-03 | Vann Brandi C | Director | Buy | 5,192 | $0 |
| 2026-07-07 | Knopp Kevin J. | President and CEO | Sell | 222 | $2,014 |
| 2026-07-07 | Brown Christopher D. | Director | Sell | 2,200 | $19,844 |
| 2026-07-02 | Brown Christopher D. | Director | Sell | 20,000 | $176,800 |
| 2026-06-30 | Knopp Kevin J. | President and CEO | Sell | 2,798 | $25,434 |
| 2026-06-25 | Knopp Kevin J. | President and CEO | Sell | 3,422 | $31,003 |
| 2026-06-25 | Brown Christopher D. | Director | Sell | 9,900 | $89,496 |
| 2026-06-25 | Leonhart Michele M. | Director | Buy | 6,486 | $0 |
| 2026-06-25 | Knopp Kevin J. | President and CEO | Sell | 40,535 | $370,490 |
| 2026-06-25 | Knopp Kevin J. | President and CEO | Sell | 16,388 | $149,131 |
| 2026-06-24 | AWM Investment Company, Inc. | 10% Owner | Sell | 4,668 | $41,965 |
| 2026-06-24 | AWM Investment Company, Inc. | 10% Owner | Sell | 3,050 | $27,463 |
| 2026-06-12 | CRANDELL KEITH | Director | Buy | 14,083 | $0 |
| 2026-06-12 | ELOI FENEL M | Director | Buy | 14,083 | $0 |
| 2026-06-12 | HRUSOVSKY E KEVIN | Director | Buy | 14,083 | $0 |
Source: SEC Form 4 filings · as of 2026-08-17