MASS 908 Devices Inc.
Nasdaq · SEC CIK 1555279 · EDGAR
- Bought, last 12 months
- $0 0 purchases by 0 insiders
- Sold, last 12 months
- $9.09M 35 sales by 6 insiders
- Filings on record
- 216 since 2021-07-08, latest 2026-09-17 17:27
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| AWM Investment Company, Inc. | 10% | — | $3.68M |
| Knopp Kevin J. | Pres, CEO, Dir | — | $2.55M |
| Brown Christopher D. | Dir | — | $1.81M |
| Kenneweg John | SVP, Sales, Product Marketing | — | $481.3K |
| Griffith Joseph H. IV | CFO | — | $376.6K |
| McCallion Kevin J. | SVP, Products, Production | — | $188.1K |
| Vann Brandi C | Dir | — | — |
| Leonhart Michele M. | Dir | — | — |
| Spoto Mark | Dir | — | — |
| Hunt Anthony | Dir | — | — |
Transactions 239
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMT | 2026-09-17 17:27 | 2026-09-15+ | MASS | Kenneweg John | SVP, Sales, Product Marketing | M - OptEx | $0.96 | +27.7K | 63.0K | +78% | +$26.5K |
| DMT | 2026-09-17 17:27 | 2026-09-15+ | MASS | Kenneweg John | SVP, Sales, Product Marketing | S - Sale+OE | $10.13 | -27.7K | 57.8K | -32% | -$280.1K |
| T | 2026-09-04 16:15 | 2026-09-02 | MASS | Brown Christopher D. | Dir | S - Sale | $10.58 | -30.0K | 775.6K | -4% | -$317.4K |
| T | 2026-08-27 16:55 | 2026-08-25 | MASS | Griffith Joseph H. IV | CFO | S - Sale | $10.95 | -11.5K | 121.5K | -9% | -$125.5K |
| MI | 2026-08-24 16:50 | 2026-08-20+ | MASS | AWM Investment Company, Inc. | 10% | S - Sale | $10.60 | -50.0K | 4.78M | -1% | -$529.8K |
| MT | 2026-08-17 17:30 | 2026-08-13+ | MASS | 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 | Brown Christopher D. | Dir | S - Sale | $9.12 | -17.8K | 805.6K | -2% | -$162.4K |
| MT | 2026-08-12 17:05 | 2026-08-10+ | MASS | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $9.90 | -149.0K | 583.6K | -20% | -$1.48M |
| T | 2026-08-07 16:50 | 2026-08-05 | MASS | Brown Christopher D. | Dir | S - Sale | $8.49 | -20.0K | 823.4K | -2% | -$169.8K |
| I | 2026-08-06 16:26 | 2026-08-04 | MASS | AWM Investment Company, Inc. | 10% | S - Sale | $8.36 | -50.0K | 4.83M | -1% | -$417.8K |
| D | 2026-08-03 16:15 | 2026-08-01 | MASS | Vann Brandi C | Dir | M - OptEx | — | +5,192 | 5,192 | New | — |
| T | 2026-07-07 16:45 | 2026-07-02 | MASS | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $9.07 | -222 | 732.6K | -0.0% | -$2,014 |
| T | 2026-07-07 16:45 | 2026-07-02 | MASS | Brown Christopher D. | Dir | S - Sale | $9.02 | -2,200 | 843.4K | -0.3% | -$19.8K |
| T | 2026-07-02 16:15 | 2026-06-30 | MASS | Brown Christopher D. | Dir | S - Sale | $8.84 | -20.0K | 845.6K | -2% | -$176.8K |
| T | 2026-06-30 17:10 | 2026-06-26 | MASS | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $9.09 | -2,798 | 732.8K | -0.4% | -$25.4K |
| T | 2026-06-25 17:15 | 2026-06-23 | MASS | Brown Christopher D. | Dir | S - Sale | $9.04 | -9,900 | 865.6K | -1% | -$89.5K |
| MT | 2026-06-25 17:15 | 2026-06-23+ | MASS | Knopp Kevin J. | Pres, CEO, Dir | S - Sale | $9.12 | -60.3K | 735.6K | -8% | -$550.6K |
| D | 2026-06-25 16:15 | 2026-06-25 | MASS | Leonhart Michele M. | Dir | M - OptEx | — | +6,486 | 27.1K | +32% | — |
| MI | 2026-06-24 16:26 | 2026-06-22+ | MASS | AWM Investment Company, Inc. | 10% | S - Sale | $9.00 | -7,718 | 4.88M | -0.2% | -$69.4K |
| D | 2026-06-12 16:51 | 2026-06-10 | MASS | Leonhart Michele M. | Dir | M - OptEx | — | +14.1K | 20.6K | +217% | — |
| D | 2026-06-12 16:49 | 2026-06-10 | MASS | HRUSOVSKY E KEVIN | Dir | M - OptEx | — | +14.1K | 165.4K | +9% | — |
| D | 2026-06-12 16:48 | 2026-06-10 | MASS | Hunt Anthony | Dir | M - OptEx | — | +14.1K | 44.2K | +47% | — |
| D | 2026-06-12 16:47 | 2026-06-10 | MASS | ELOI FENEL M | Dir | M - OptEx | — | +14.1K | 40.9K | +53% | — |
| D | 2026-06-12 16:46 | 2026-06-10 | MASS | CRANDELL KEITH | Dir | M - OptEx | — | +14.1K | 39.4K | +56% | — |
| D | 2026-06-12 16:45 | 2026-06-10 | MASS | Spoto Mark | Dir | M - OptEx | — | +14.1K | 89.3K | +19% | — |
| T | 2026-06-05 18:49 | 2026-06-04 | MASS | Brown Christopher D. | Dir | S - Sale | $9.00 | -100 | 875.5K | -0.0% | -$900 |
| MI | 2026-06-04 16:43 | 2026-06-02+ | MASS | AWM Investment Company, Inc. | 10% | S - Sale | $8.97 | -42.3K | 4.89M | -0.9% | -$379.2K |
| T | 2026-06-04 16:15 | 2026-06-03 | MASS | Brown Christopher D. | Dir | S - Sale | $8.73 | -20.0K | 875.6K | -2% | -$174.6K |
| MI | 2026-05-29 16:48 | 2026-05-27+ | MASS | AWM Investment Company, Inc. | 10% | S - Sale | $8.62 | -186.9K | 4.93M | -4% | -$1.61M |
| T | 2026-05-29 16:15 | 2026-05-28 | MASS | Griffith Joseph H. IV | CFO | S - Sale | $9.03 | -6,940 | 133.0K | -5% | -$62.7K |
| T | 2026-05-29 16:15 | 2026-05-28 | MASS | Brown Christopher D. | Dir | S - Sale | $9.00 | -30.0K | 895.6K | -3% | -$270.0K |
| I | 2026-05-13 16:49 | 2026-05-11 | MASS | AWM Investment Company, Inc. | 10% | S - Sale | $8.25 | -5,000 | 5.12M | -0.1% | -$41.3K |
| 2026-05-11 16:05 | 2026-05-08 | MASS | Kenneweg John | SVP, Sales, Product Marketing | S - Sale | $8.11 | -18.3K | 57.8K | -24% | -$148.0K | |
| MI | 2026-05-08 16:40 | 2026-05-06+ | MASS | AWM Investment Company, Inc. | 10% | S - Sale | $8.08 | -78.2K | 5.12M | -2% | -$632.1K |
| T | 2026-05-07 16:30 | 2026-05-06 | MASS | Brown Christopher D. | Dir | S - Sale | $7.23 | -20.0K | 925.6K | -2% | -$144.6K |
| D | 2026-05-04 16:30 | 2026-05-01 | MASS | Kenneweg John | SVP, Sales, Product Marketing | M - OptEx | — | +26.0K | 83.8K | +45% | — |
| D | 2026-05-04 16:30 | 2026-05-01 | MASS | Kenneweg John | SVP, Sales, Product Marketing | S - Sale+OE | $6.83 | -7,787 | 76.0K | -9% | -$53.2K |
| DT | 2026-04-14 16:00 | 2026-04-10 | MASS | McCallion Kevin J. | SVP, Products, Production | M - OptEx | $1.05 | +2,693 | 47.6K | +6% | +$2,828 |
| DT | 2026-04-14 16:00 | 2026-04-10 | MASS | McCallion Kevin J. | SVP, Products, Production | S - Sale+OE | $7.01 | -2,693 | 44.9K | -6% | -$18.9K |
| DMT | 2026-04-10 19:31 | 2026-04-08+ | MASS | McCallion Kevin J. | SVP, Products, Production | M - OptEx | $1.05 | +24.0K | 50.3K | +91% | +$25.2K |
| DMT | 2026-04-10 19:31 | 2026-04-08+ | MASS | McCallion Kevin J. | SVP, Products, Production | S - Sale+OE | $7.05 | -24.0K | 44.9K | -35% | -$169.1K |
| MT | 2026-04-10 18:37 | 2026-04-08+ | MASS | Brown Christopher D. | Dir | S - Sale | $7.06 | -40.0K | 945.6K | -4% | -$282.3K |
| DA | 2026-03-05 | 2026-03-02 | MASS | McCallion Kevin J. | SVP, Products, Production | M - OptEx | $1.05 | +7 | 44.9K | +0.0% | +$7.35 |
| DA | 2026-03-05 | 2026-03-02 | MASS | McCallion Kevin J. | SVP, Products, Production | S - Sale+OE | $7.00 | -7 | 44.9K | -0.0% | -$49 |
| 2026-03-04 | 2026-03-02 | MASS | McCallion Kevin J. | SVP, Products, Production | S - Sale | $7.00 | -7 | 44.9K | -0.0% | -$49 | |
| DM | 2026-02-03 | 2026-02-01 | MASS | Brown Christopher D. | Dir | M - OptEx | — | +23.4K | 967.1K | +2% | — |
| D | 2026-02-03 | 2026-02-02 | MASS | Griffith Joseph H. IV | CFO | S - Sale+OE | $6.18 | -23.2K | 139.9K | -14% | -$143.2K |
| DM | 2026-02-03 | 2026-02-01 | MASS | Griffith Joseph H. IV | CFO | M - OptEx | — | +70.1K | 163.1K | +75% | — |
| DM | 2026-02-03 | 2026-02-01 | MASS | Knopp Kevin J. | Pres, CEO, Dir | M - OptEx | — | +108.0K | 734.0K | +17% | — |
| D | 2026-02-03 | 2026-02-02 | MASS | Knopp Kevin J. | Pres, CEO, Dir | S - Sale+OE | $6.18 | -34.8K | 796.0K | -4% | -$214.8K |
| 2026-02-03 | 2025-12-30 | MASS | Spoto Mark | Dir | G - Gift | $0.00 | +928 | 75.3K | +1% | $0 | |
| I | 2026-02-03 | 2025-12-30 | MASS | Spoto Mark | Dir | G - Gift | $0.00 | -928 | 0 | -100% | $0 |
| I | 2026-02-03 | 2025-10-14 | MASS | Spoto Mark | Dir | W - Inherited | $0.00 | +928 | 928 | New | $0 |
| M | 2025-10-06 | 2025-10-02+ | MASS | Griffith Joseph H. IV | CFO | S - Sale | $9.05 | -5,000 | 97.2K | -5% | -$45.2K |
| 2025-09-23 | 2025-09-19 | MASS | Griffith Joseph H. IV | CFO | S - Sale | $7.07 | -5,000 | 97.9K | -5% | -$35.4K | |
| D | 2025-06-27 | 2025-06-25 | MASS | Leonhart Michele M. | Dir | M - OptEx | — | +6,485 | 6,485 | New | — |
| M | 2025-06-18 | 2025-06-16+ | MASS | Turner Michael S. | Chief Legal, Admin Off | S - Sale | $7.51 | -24.6K | 8,521 | -74% | -$184.8K |
| D | 2025-06-13 | 2025-06-11 | MASS | George Jeffrey P. | Dir | M - OptEx | — | +11.4K | 26.8K | +74% | — |
| D | 2025-06-13 | 2025-06-11 | MASS | Eisenberg Marcia | Dir | M - OptEx | — | +11.4K | 26.0K | +78% | — |
| D | 2025-06-13 | 2025-06-11 | MASS | Hunt Anthony | Dir | M - OptEx | — | +11.4K | 30.1K | +61% | — |
| D | 2025-06-13 | 2025-06-11 | MASS | CRANDELL KEITH | Dir, 10% | M - OptEx | — | +11.4K | 25.3K | +82% | — |
| D | 2025-06-13 | 2025-06-11 | MASS | Spoto Mark | Dir | M - OptEx | — | +11.4K | 74.3K | +18% | — |
| D | 2025-06-13 | 2025-06-11 | MASS | HRUSOVSKY E KEVIN | Dir | M - OptEx | — | +11.4K | 151.3K | +8% | — |
| D | 2025-06-13 | 2025-06-11 | MASS | ELOI FENEL M | Dir | M - OptEx | — | +11.4K | 26.8K | +74% | — |
| 2025-06-06 | 2025-06-04 | MASS | Griffith Joseph H. IV | CFO | S - Sale | $7.08 | -6,940 | 102.9K | -6% | -$49.1K | |
| 2025-05-19 | 2025-05-15 | MASS | Knopp Kevin J. | Pres, CEO, Dir | P - Purchase | $4.44 | +15.0K | 722.7K | +2% | +$66.6K | |
| M | 2025-05-15 | 2025-05-14 | MASS | Spoto Mark | Dir | P - Purchase | $4.29 | +10.0K | 60.0K | +20% | +$42.9K |
| 2025-05-14 | 2025-05-14 | MASS | Knopp Kevin J. | Pres, CEO, Dir | P - Purchase | $4.32 | +15.0K | 707.7K | +2% | +$64.8K | |
| D | 2025-03-04 | 2025-03-02 | MASS | Hunt Anthony | Dir | M - OptEx | — | +2,058 | 18.7K | +12% | — |
| DM | 2025-02-04 | 2025-02-03 | MASS | Brown Christopher D. | Chief Product Off | S - Sale+OE | $2.34 | -7,767 | 968.2K | -0.8% | -$18.2K |
| DM | 2025-02-04 | 2025-02-01 | MASS | Brown Christopher D. | Chief Product Off | M - OptEx | — | +23.4K | 969.9K | +2% | — |
| DM | 2025-02-04 | 2025-02-01 | MASS | Knopp Kevin J. | Pres, CEO, Dir | M - OptEx | — | +41.7K | 708.7K | +6% | — |
| DM | 2025-02-04 | 2025-02-03 | MASS | Knopp Kevin J. | Pres, CEO, Dir | S - Sale+OE | $2.32 | -16.0K | 704.4K | -2% | -$37.1K |
| DM | 2025-02-04 | 2025-02-01 | MASS | Griffith Joseph H. IV | CFO | M - OptEx | — | +26.7K | 120.1K | +29% | — |
| DM | 2025-02-04 | 2025-02-03 | MASS | Griffith Joseph H. IV | CFO | S - Sale+OE | $2.34 | -10.2K | 109.9K | -9% | -$24.0K |
| DM | 2025-02-04 | 2025-02-03 | MASS | Turner Michael S. | Chief Legal, Admin Off | S - Sale+OE | $2.33 | -9,672 | 24.6K | -28% | -$22.5K |
| DM | 2025-02-04 | 2025-02-01 | MASS | Turner Michael S. | Chief Legal, Admin Off | M - OptEx | — | +25.2K | 23.4K | New | — |
| D | 2024-12-19 | 2024-12-19 | MASS | Brown Christopher D. | Chief Product Off | M - OptEx | $1.58 | +55.1K | 946.5K | +6% | +$87.1K |
| DM | 2024-12-16 | 2024-12-13 | MASS | Knopp Kevin J. | Pres, CEO, Dir | M - OptEx | $1.63 | +158.0K | 667.0K | +31% | +$257.8K |
| D | 2024-08-08 | 2024-08-07 | MASS | Brown Christopher D. | Chief Product Off | M - OptEx | $1.58 | +6,328 | 891.3K | +0.7% | +$9,998 |
| D | 2024-06-14 | 2024-06-12 | MASS | ELOI FENEL M | Dir | M - OptEx | — | +7,777 | 15.4K | +101% | — |
| D | 2024-06-14 | 2024-06-12 | MASS | CRANDELL KEITH | Dir, 10% | M - OptEx | — | +7,777 | 13.9K | +126% | — |
| D | 2024-06-14 | 2024-06-12 | MASS | Eisenberg Marcia | Dir | M - OptEx | — | +7,777 | 14.6K | +114% | — |
| D | 2024-06-14 | 2024-06-12 | MASS | Spoto Mark | Dir | M - OptEx | — | +7,777 | 53.0K | +17% | — |
| D | 2024-06-14 | 2024-06-12 | MASS | George Jeffrey P. | Dir | M - OptEx | — | +7,777 | 15.4K | +101% | — |
| D | 2024-06-14 | 2024-06-12 | MASS | HRUSOVSKY E KEVIN | Dir | M - OptEx | — | +7,777 | 139.9K | +6% | — |
| D | 2024-06-14 | 2024-06-12 | MASS | Hunt Anthony | Dir | M - OptEx | — | +7,777 | 16.7K | +88% | — |
| D | 2024-06-10 | 2024-06-07 | MASS | Eisenberg Marcia | Dir | M - OptEx | $0.00 | +682 | 6,816 | +11% | $0 |
| 2024-05-13 | 2024-05-13 | MASS | Knopp Kevin J. | Pres, CEO, Dir | P - Purchase | $6.42 | +10.0K | 509.0K | +2% | +$64.2K | |
| 2024-05-10 | 2024-05-10 | MASS | Knopp Kevin J. | Pres, CEO, Dir | P - Purchase | $5.77 | +10.0K | 499.0K | +2% | +$57.7K | |
| 2024-05-09 | 2024-05-09 | MASS | Knopp Kevin J. | Pres, CEO, Dir | P - Purchase | $5.83 | +10.0K | 489.0K | +2% | +$58.3K | |
| 2024-05-08 | 2024-05-08 | MASS | Knopp Kevin J. | Pres, CEO, Dir | P - Purchase | $5.72 | +10.0K | 479.0K | +2% | +$57.2K | |
| 2024-05-07 | 2024-05-07 | MASS | 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 | Knopp Kevin J. | Pres, CEO, Dir | M - OptEx | $1.75 | +47.0K | 459.0K | +11% | +$82.2K |
| D | 2024-04-02 | 2024-04-01 | MASS | Brown Christopher D. | Chief Product Off | M - OptEx | $1.75 | +3,600 | 885.0K | +0.4% | +$6,300 |
| D | 2024-03-27 | 2024-03-26 | MASS | Griffith Joseph H. IV | CFO | M - OptEx | $1.58 | +8,437 | 93.4K | +10% | +$13.3K |
| D | 2024-03-05 | 2024-03-04 | MASS | Hunt Anthony | Dir | M - OptEx | — | +2,057 | 8,886 | +30% | — |
| D | 2024-02-23 | 2024-02-22 | MASS | George Jeffrey P. | Dir | M - OptEx | — | +508 | 7,673 | +7% | — |
| D | 2024-02-23 | 2024-02-22 | MASS | ELOI FENEL M | Dir | M - OptEx | — | +508 | 7,673 | +7% | — |
| DM | 2024-02-02 | 2024-02-01 | MASS | Knopp Kevin J. | Pres, CEO, Dir | S - Sale+OE | $7.00 | -9,071 | 412.0K | -2% | -$63.5K |
Purchase Sale Sale after option exercise All abbreviations