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? 77% planned / 23% discretionary
Largest single sale: $1.1M.
Where they traded
No open-market insider purchase on record.
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Brown Christopher D. | Director | Sell 10b5-1 | 30,000 | $10.58 | $317.4K | 775,559 −3.7% of holding | |
| Griffith Joseph H. IV | Chief Financial Officer | Sell 10b5-1 | 11,459 | $10.95 | $125.5K | 121,497 −8.6% of holding | |
| AWM Investment Company, Inc. | 10% Owner | Sell | 41,578 | $10.61 | $441.2K | 4,779,773 −0.9% of holding | |
| AWM Investment Company, Inc. | 10% Owner | Sell | 8,422 | $10.52 | $88.6K | 4,821,351 −0.2% of holding | |
| Knopp Kevin J. | President and CEO | Sell 10b5-1 | 20,000 | $10.35 | $207.0K | 555,968 −3.5% of holding | |
| Knopp Kevin J. | President and CEO | Sell 10b5-1 | 7,622 | $10.06 | $76.7K | 575,968 −1.3% of holding | |
| Knopp Kevin J. | President and CEO | Sell 10b5-1 | 2,747 | $10.07 | $27.7K | 583,590 −0.5% of holding | |
| Knopp Kevin J. 2 fills | President and CEO | Sell 10b5-1 | 145,918 | $9.90 | $1.4M | 616,507 −19.1% of holding | |
| Brown Christopher D. | Director | Sell 10b5-1 | 8,358 | $9.23 | $77.1K | 805,559 −1% of holding | |
| Brown Christopher D. | Director | Sell 10b5-1 | 9,442 | $9.03 | $85.3K | 813,917 −1.1% of holding | |
| Knopp Kevin J. | President and CEO | Sell 10b5-1 | 348 | $9.06 | $3.2K | 732,255 −0% of holding | |
| Brown Christopher D. | Director | Sell 10b5-1 | 20,000 | $8.49 | $169.8K | 823,359 −2.4% of holding | |
| AWM Investment Company, Inc. | 10% Owner | Sell | 50,000 | $8.36 | $417.8K | 4,829,773 −1% of holding | |
| Brown Christopher D. | Director | Sell 10b5-1 | 2,200 | $9.02 | $19.8K | 843,359 −0.3% of holding | |
| Knopp Kevin J. | President and CEO | Sell 10b5-1 | 222 | $9.07 | $2.0K | 732,603 −0% of holding | |
| Brown Christopher D. | Director | Sell 10b5-1 | 20,000 | $8.84 | $176.8K | 845,559 −2.3% of holding | |
| Knopp Kevin J. | President and CEO | Sell 10b5-1 | 2,798 | $9.09 | $25.4K | 732,825 −0.4% of holding | |
| Knopp Kevin J. | President and CEO | Sell 10b5-1 | 16,388 | $9.10 | $149.1K | 735,623 −2.2% of holding | |
| Knopp Kevin J. | President and CEO | Sell 10b5-1 | 40,535 | $9.14 | $370.5K | 752,011 −5.1% of holding | |
| Brown Christopher D. | Director | Sell 10b5-1 | 9,900 | $9.04 | $89.5K | 865,559 −1.1% of holding | |
| Knopp Kevin J. | President and CEO | Sell 10b5-1 | 3,422 | $9.06 | $31.0K | 792,546 −0.4% of holding | |
| AWM Investment Company, Inc. | 10% Owner | Sell | 3,050 | $9.00 | $27.5K | 4,879,773 −0.1% of holding | |
| AWM Investment Company, Inc. | 10% Owner | Sell | 4,668 | $8.99 | $42.0K | 4,882,823 −0.1% 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.