Knopp Kevin J. (CIK 1836523) reported 18 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-17). Recent activity: Sell MASS (7,622 shares), Sell MASS (20,000 shares), Sell MASS (348 shares), Sell MASS (115,748 shares), Sell MASS (30,170 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-17 | 908 Devices Inc. (MASS) | President and CEO | Sell | 7,622 | $76,677 |
| 2026-08-17 | 908 Devices Inc. (MASS) | President and CEO | Sell | 20,000 | $207,000 |
| 2026-08-12 | 908 Devices Inc. (MASS) | President and CEO | Sell | 348 | $3,153 |
| 2026-08-12 | 908 Devices Inc. (MASS) | President and CEO | Sell | 115,748 | $1.1M |
| 2026-08-12 | 908 Devices Inc. (MASS) | President and CEO | Sell | 30,170 | $306,527 |
| 2026-08-12 | 908 Devices Inc. (MASS) | President and CEO | Sell | 2,747 | $27,662 |
| 2026-07-07 | 908 Devices Inc. (MASS) | President and CEO | Sell | 222 | $2,014 |
| 2026-06-30 | 908 Devices Inc. (MASS) | President and CEO | Sell | 2,798 | $25,434 |
| 2026-06-25 | 908 Devices Inc. (MASS) | President and CEO | Sell | 3,422 | $31,003 |
| 2026-06-25 | 908 Devices Inc. (MASS) | President and CEO | Sell | 40,535 | $370,490 |
| 2026-06-25 | 908 Devices Inc. (MASS) | President and CEO | Sell | 16,388 | $149,131 |
| 2026-02-03 | 908 Devices Inc. (MASS) | President and CEO | Buy | 11,255 | $0 |
| 2026-02-03 | 908 Devices Inc. (MASS) | President and CEO | Buy | 13,449 | $0 |
| 2026-02-03 | 908 Devices Inc. (MASS) | President and CEO | Buy | 17,007 | $0 |
| 2026-02-03 | 908 Devices Inc. (MASS) | President and CEO | Buy | 66,288 | $0 |
| 2026-02-03 | 908 Devices Inc. (MASS) | President and CEO | Sell | 34,764 | $214,842 |
| 2025-05-19 | 908 Devices Inc. (MASS) | President and CEO | Buy | 15,000 | $66,600 |
| 2025-05-14 | 908 Devices Inc. (MASS) | President and CEO | Buy | 15,000 | $64,800 |
Source: SEC Form 4 filings · as of 2026-08-17