| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Over the past 90 days, insiders at 908 Devices Inc. (MASS) have been net sellers, shedding 461,550 shares worth roughly $4.7M on balance. In the past 30 days, 0 insiders bought and 3 sold. Sales set the recent tone.
All 3 insiders who sold still hold shares after their sales. MASS sits in the Health Care Equipment & Supplies industry within the Health Care sector, so this activity is best read against the sector's broader insider trend.
| Role | Insider | Shares | Value | 30d |
|---|---|---|---|---|
| 10% | 4.74M | $54.56M | -18,000 | |
| Dir | 805.6K | $1.41M | -30,000 | |
| CEO | 556.0K | $5.75M | - | |
| Dir | 165.4K | - | - | |
| CFO | 116.5K | $1.52M | -5,000 |
Buys and sells only
| Date | Insider | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Oct 7, 2026 | Brown Christopher D.83 | Director | Sale+OE | 30,000 | $11.89 | $356,700.00 | -3.9% | - | - | |
| Oct 6, 2026 | Griffith Joseph H. IV81 | Chief Financial Officer | Sell | 5,000 | $13.03 | $65,150.00 | -4.1% | - | - | |
| Sep 29, 2026 | Awm Investment Company, Inc.73 | 10% Owner | Sell | 18,000 | $11.52 | $207,322.20 | -0.4% | - | - | |
| Sep 24, 2026 | Awm Investment Company, Inc.73 | 10% Owner | Sell | 25,000 | $11.36 | $283,875.60 | -0.3% | - | - | |
| Sep 17, 2026 | Kenneweg John84 | SVP, Sales &Product Marketing | Sale+OE | 27,656 | $10.13 | $280,070.43 | -32.4% | - | - | |
| Sep 2, 2026 | Brown Christopher D.83 | Director | Sell | 30,000 | $10.58 | $317,400.00 | -3.7% | - | - | |
| Aug 25, 2026 | Griffith Joseph H. IV81 | Chief Financial Officer | Sell | 11,459 | $10.95 | $125,476.05 | -8.6% | - | - | |
| Aug 21, 2026 | Awm Investment Company, Inc.73 | 10% Owner | Sell | 50,000 | $10.60 | $529,797.39 | -1.0% | - | - | |
| Aug 17, 2026 | Knopp Kevin J.79 | President and CEO | Sell | 27,622 | $10.27 | $283,677.32 | -4.7% | - | - | |
| Aug 12, 2026 | Knopp Kevin J.79 | President and CEO | Sell | 149,013 | $9.90 | $1,475,145.21 | -20.3% | - | - |