Knopp Kevin J.
SEC CIK 1836523 · EDGAR
BoughtSold
Companies
| Ticker | Company | Title | Holding | Bought | Sold | Trades | First | Last |
|---|---|---|---|---|---|---|---|---|
| MASS | 908 Devices Inc. | Pres, CEO, Dir | 556.0K | $424.8K | $11.35M | 40 | 2021-08-16 | 2026-08-13 |
Most active insiders at MASS, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | AWM Investment Company, Inc. | 10% | — | $3.68M |
| 2 | Knopp Kevin J. | Pres, CEO, Dir | — | $2.55M |
| 3 | Brown Christopher D. | Dir | — | $1.81M |
| 4 | Kenneweg John | SVP, Sales, Product Marketing | — | $481.3K |
| 5 | Griffith Joseph H. IV | CFO | — | $376.6K |
| 6 | McCallion Kevin J. | SVP, Products, Production | — | $188.1K |
| 7 | Vann Brandi C | Dir | — | — |
| 8 | Leonhart Michele M. | Dir | — | — |
| 9 | Spoto Mark | Dir | — | — |
| 10 | Hunt Anthony | Dir | — | — |
Transactions 40
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MT | 2026-08-17 17:30 | 2026-08-13+ | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $10.27 | -27.6K | 556.0K | -5% | -$283.7K |
| MT | 2026-08-12 17:05 | 2026-08-10+ | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $9.90 | -149.0K | 583.6K | -20% | -$1.48M |
| T | 2026-07-07 16:45 | 2026-07-02 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $9.07 | -222 | 732.6K | -0.0% | -$2,014 |
| T | 2026-06-30 17:10 | 2026-06-26 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $9.09 | -2,798 | 732.8K | -0.4% | -$25.4K |
| MT | 2026-06-25 17:15 | 2026-06-23+ | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $9.12 | -60.3K | 735.6K | -8% | -$550.6K |
| DM | 2026-02-03 | 2026-02-01 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | M - OptEx | — | +108.0K | 734.0K | +17% | — |
| D | 2026-02-03 | 2026-02-02 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale+OE | $6.18 | -34.8K | 796.0K | -4% | -$214.8K |
| 2025-05-19 | 2025-05-15 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | P - Purchase | $4.44 | +15.0K | 722.7K | +2% | +$66.6K | |
| 2025-05-14 | 2025-05-14 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | P - Purchase | $4.32 | +15.0K | 707.7K | +2% | +$64.8K | |
| DM | 2025-02-04 | 2025-02-01 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | M - OptEx | — | +41.7K | 708.7K | +6% | — |
| DM | 2025-02-04 | 2025-02-03 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale+OE | $2.32 | -16.0K | 704.4K | -2% | -$37.1K |
| DM | 2024-12-16 | 2024-12-13 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | M - OptEx | $1.63 | +158.0K | 667.0K | +31% | +$257.8K |
| 2024-05-13 | 2024-05-13 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | P - Purchase | $6.42 | +10.0K | 509.0K | +2% | +$64.2K | |
| 2024-05-10 | 2024-05-10 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | P - Purchase | $5.77 | +10.0K | 499.0K | +2% | +$57.7K | |
| 2024-05-09 | 2024-05-09 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | P - Purchase | $5.83 | +10.0K | 489.0K | +2% | +$58.3K | |
| 2024-05-08 | 2024-05-08 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | P - Purchase | $5.72 | +10.0K | 479.0K | +2% | +$57.2K | |
| 2024-05-07 | 2024-05-07 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | P - Purchase | $5.60 | +10.0K | 469.0K | +2% | +$56.0K | |
| D | 2024-04-16 | 2024-04-16 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | M - OptEx | $1.75 | +47.0K | 459.0K | +11% | +$82.2K |
| DM | 2024-02-02 | 2024-02-01 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale+OE | $7.00 | -9,071 | 412.0K | -2% | -$63.5K |
| DM | 2024-02-02 | 2024-02-01 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | M - OptEx | — | +24.7K | 421.1K | +6% | — |
| D | 2023-06-05 | 2023-06-05 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | M - OptEx | $1.75 | +28.5K | 396.3K | +8% | +$49.9K |
| T | 2023-05-25 | 2023-05-23 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $10.12 | -60.0K | 367.8K | -14% | -$607.2K |
| M | 2023-02-17 | 2023-02-15+ | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $10.25 | -20.0K | 432.7K | -4% | -$205.0K |
| DM | 2023-02-03 | 2023-02-01+ | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale+OE | $10.40 | -44.0K | 447.8K | -9% | -$458.3K |
| D | 2023-02-03 | 2023-02-01 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | M - OptEx | — | +11.3K | 491.9K | +2% | — |
| M | 2022-11-17 | 2022-11-15 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $11.04 | -20.0K | 480.6K | -4% | -$220.8K |
| M | 2022-10-19 | 2022-10-17+ | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $15.08 | -30.0K | 500.6K | -6% | -$452.4K |
| 2022-09-19 | 2022-09-15 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $16.94 | -30.0K | 530.6K | -5% | -$508.2K | |
| M | 2022-08-17 | 2022-08-15 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $19.27 | -30.0K | 563.0K | -5% | -$578.1K |
| M | 2022-08-09 | 2022-08-05+ | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $25.32 | -26.2K | 590.6K | -4% | -$663.2K |
| M | 2022-08-01 | 2022-07-28+ | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $22.28 | -38.3K | 616.8K | -6% | -$854.4K |
| 2022-07-25 | 2022-07-21 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $22.04 | -200 | 655.2K | -0.0% | -$4,408 | |
| M | 2022-07-19 | 2022-07-15 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $17.37 | -30.0K | 673.6K | -4% | -$521.1K |
| M | 2022-07-08 | 2022-07-06+ | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $22.07 | -1,453 | 685.8K | -0.2% | -$32.1K |
| 2022-06-22 | 2022-06-21 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $15.07 | -9,200 | 686.8K | -1% | -$138.6K | |
| M | 2022-06-17 | 2022-06-15 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $14.66 | -20.8K | 696.0K | -3% | -$304.9K |
| M | 2021-11-02 | 2021-11-01 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $34.62 | -20.0K | 716.8K | -3% | -$692.4K |
| M | 2021-10-05 | 2021-10-01 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $33.65 | -20.0K | 742.3K | -3% | -$673.0K |
| M | 2021-09-03 | 2021-09-01 | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $35.91 | -20.0K | 771.2K | -3% | -$718.2K |
| M | 2021-08-18 | 2021-08-16+ | MASS | 908 Devices Inc. | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $30.46 | -35.0K | 808.4K | -4% | -$1.07M |
Purchase Sale Sale after option exercise All abbreviations