15 insiders reported 102 Form 4 transactions for 908 Devices Inc. (MASS) over the past 18 months (most recent 2026-07-07). Recent activity: Knopp Kevin J. (President and CEO) Sell 222 shares, Brown Christopher D. (Director) Sell 2,200 shares, Brown Christopher D. (Director) Sell 20,000 shares, Knopp Kevin J. (President and CEO) Sell 2,798 shares, Knopp Kevin J. (President and CEO) Sell 3,422 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 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. | Insider | Sell | 4,668 | $41,965 |
| 2026-06-24 | AWM Investment Company, Inc. | Insider | Sell | 3,050 | $27,463 |
| 2026-06-12 | ELOI FENEL M | Director | Buy | 14,083 | $0 |
| 2026-06-12 | CRANDELL KEITH | Director | Buy | 14,083 | $0 |
| 2026-06-12 | HRUSOVSKY E KEVIN | Director | Buy | 14,083 | $0 |
| 2026-06-12 | Hunt Anthony | Director | Buy | 14,083 | $0 |
| 2026-06-12 | Spoto Mark | Director | Buy | 14,083 | $0 |
| 2026-06-12 | Leonhart Michele M. | Director | Buy | 14,083 | $0 |
| 2026-06-05 | Brown Christopher D. | Director | Sell | 100 | $900 |
| 2026-05-29 | Griffith Joseph H. IV | Chief Financial Officer | Sell | 6,940 | $62,668 |
| 2026-05-29 | AWM Investment Company, Inc. | Insider | Sell | 1,500 | $12,375 |
| 2026-05-29 | Brown Christopher D. | Director | Sell | 30,000 | $270,000 |
| 2026-05-29 | AWM Investment Company, Inc. | Insider | Sell | 15,000 | $123,790 |
| 2026-05-29 | AWM Investment Company, Inc. | Insider | Sell | 170,442 | $1.5M |
| 2026-05-13 | AWM Investment Company, Inc. | Insider | Sell | 5,000 | $41,257 |
| 2026-05-11 | Kenneweg John | SVP, Sales & Product Marketing | Sell | 18,255 | $148,048 |
Source: SEC Form 4 filings · as of 2026-07-07