16 insiders reported 103 Form 4 transactions for 908 Devices Inc. (MASS) over the past 18 months (most recent 2026-09-17). Recent activity: Kenneweg John (SVP, Sales & Product Marketing) Buy 1,000 shares, Kenneweg John (SVP, Sales & Product Marketing) Sell 1,000 shares, Kenneweg John (SVP, Sales & Product Marketing) Buy 21,399 shares, Kenneweg John (SVP, Sales & Product Marketing) Sell 21,399 shares, Kenneweg John (SVP, Sales & Product Marketing) Buy 5,257 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-17 | Kenneweg John | SVP, Sales & Product Marketing | Buy | 1,000 | $960 |
| 2026-09-17 | Kenneweg John | SVP, Sales & Product Marketing | Sell | 1,000 | $10,000 |
| 2026-09-17 | Kenneweg John | SVP, Sales & Product Marketing | Buy | 21,399 | $20,543 |
| 2026-09-17 | Kenneweg John | SVP, Sales & Product Marketing | Sell | 21,399 | $216,344 |
| 2026-09-17 | Kenneweg John | SVP, Sales & Product Marketing | Buy | 5,257 | $5,047 |
| 2026-09-17 | Kenneweg John | SVP, Sales & Product Marketing | Sell | 5,257 | $53,727 |
| 2026-09-04 | Brown Christopher D. | Director | Sell | 30,000 | $317,400 |
| 2026-08-27 | Griffith Joseph H. IV | Chief Financial Officer | Sell | 11,459 | $125,476 |
| 2026-08-24 | AWM Investment Company, Inc. | 10% Owner | Sell | 8,422 | $88,638 |
| 2026-08-24 | AWM Investment Company, Inc. | 10% Owner | Sell | 41,578 | $441,159 |
| 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 |
Source: SEC Form 4 filings · as of 2026-09-17