MASS 908 Devices Inc.
908 Devices Inc. (MASS) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 50% planned / 50% discretionary
Largest single sale: $272.6K.
Where they traded
No open-market insider purchase on record.
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Griffith Joseph H. IV | Chief Financial Officer | Sell 10b5-1 | 5,000 | $13.03 | $65.2K | 116,497 −4.1% of holding | |
| AWM Investment Company, Inc. | 10% Owner | Sell | 24,000 | $11.36 | $272.6K | 4,754,773 −0.5% of holding | |
| AWM Investment Company, Inc. | 10% Owner | Sell | 1,000 | $11.25 | $11.3K | 4,755,773 −0% of holding | |
| Kenneweg John | SVP, Sales & Product Marketing | Sell 10b5-1 | 5,257 | $10.22 | $53.7K | 57,784 −8.3% of holding | |
| Kenneweg John | SVP, Sales & Product Marketing | Sell 10b5-1 | 21,399 | $10.11 | $216.3K | 57,784 −27% of holding | |
| Kenneweg John | SVP, Sales & Product Marketing | Sell 10b5-1 | 1,000 | $10.00 | $10.0K | 57,784 −1.7% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.