Brown Christopher D.
SEC CIK 1836988 · EDGAR
BoughtSold
Companies
| Ticker | Company | Title | Holding | Bought | Sold | Trades | First | Last |
|---|---|---|---|---|---|---|---|---|
| MASS | 908 Devices Inc. | Dir | 775.6K | — | $7.56M | 37 | 2021-07-07 | 2026-09-02 |
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 37
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T | 2026-09-04 16:15 | 2026-09-02 | MASS | 908 Devices Inc. | Brown Christopher D. | Dir | S - Sale | $10.58 | -30.0K | 775.6K | -4% | -$317.4K |
| MT | 2026-08-12 17:05 | 2026-08-10+ | MASS | 908 Devices Inc. | Brown Christopher D. | Dir | S - Sale | $9.12 | -17.8K | 805.6K | -2% | -$162.4K |
| T | 2026-08-07 16:50 | 2026-08-05 | MASS | 908 Devices Inc. | Brown Christopher D. | Dir | S - Sale | $8.49 | -20.0K | 823.4K | -2% | -$169.8K |
| T | 2026-07-07 16:45 | 2026-07-02 | MASS | 908 Devices Inc. | 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 | 908 Devices Inc. | Brown Christopher D. | Dir | S - Sale | $8.84 | -20.0K | 845.6K | -2% | -$176.8K |
| T | 2026-06-25 17:15 | 2026-06-23 | MASS | 908 Devices Inc. | Brown Christopher D. | Dir | S - Sale | $9.04 | -9,900 | 865.6K | -1% | -$89.5K |
| T | 2026-06-05 18:49 | 2026-06-04 | MASS | 908 Devices Inc. | Brown Christopher D. | Dir | S - Sale | $9.00 | -100 | 875.5K | -0.0% | -$900 |
| T | 2026-06-04 16:15 | 2026-06-03 | MASS | 908 Devices Inc. | Brown Christopher D. | Dir | S - Sale | $8.73 | -20.0K | 875.6K | -2% | -$174.6K |
| T | 2026-05-29 16:15 | 2026-05-28 | MASS | 908 Devices Inc. | Brown Christopher D. | Dir | S - Sale | $9.00 | -30.0K | 895.6K | -3% | -$270.0K |
| T | 2026-05-07 16:30 | 2026-05-06 | MASS | 908 Devices Inc. | Brown Christopher D. | Dir | S - Sale | $7.23 | -20.0K | 925.6K | -2% | -$144.6K |
| MT | 2026-04-10 18:37 | 2026-04-08+ | MASS | 908 Devices Inc. | Brown Christopher D. | Dir | S - Sale | $7.06 | -40.0K | 945.6K | -4% | -$282.3K |
| DM | 2026-02-03 | 2026-02-01 | MASS | 908 Devices Inc. | Brown Christopher D. | Dir | M - OptEx | — | +23.4K | 967.1K | +2% | — |
| DM | 2025-02-04 | 2025-02-03 | MASS | 908 Devices Inc. | 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 | 908 Devices Inc. | Brown Christopher D. | Chief Product Off | M - OptEx | — | +23.4K | 969.9K | +2% | — |
| D | 2024-12-19 | 2024-12-19 | MASS | 908 Devices Inc. | Brown Christopher D. | Chief Product Off | M - OptEx | $1.58 | +55.1K | 946.5K | +6% | +$87.1K |
| D | 2024-08-08 | 2024-08-07 | MASS | 908 Devices Inc. | Brown Christopher D. | Chief Product Off | M - OptEx | $1.58 | +6,328 | 891.3K | +0.7% | +$9,998 |
| D | 2024-04-02 | 2024-04-01 | MASS | 908 Devices Inc. | Brown Christopher D. | Chief Product Off | M - OptEx | $1.75 | +3,600 | 885.0K | +0.4% | +$6,300 |
| DM | 2024-02-02 | 2024-02-01 | MASS | 908 Devices Inc. | Brown Christopher D. | Chief Product Off | S - Sale+OE | $7.01 | -3,957 | 888.8K | -0.4% | -$27.7K |
| DM | 2024-02-02 | 2024-02-01 | MASS | 908 Devices Inc. | Brown Christopher D. | Chief Product Off | M - OptEx | — | +12.4K | 882.9K | +1% | — |
| M | 2023-12-21 | 2023-12-19+ | MASS | 908 Devices Inc. | Brown Christopher D. | Chief Product Off | S - Sale | $9.10 | -20.0K | 890.5K | -2% | -$182.0K |
| T | 2023-06-09 | 2023-06-07 | MASS | 908 Devices Inc. | Brown Christopher D. | Chief Product Off | S - Sale | $10.03 | -4,470 | 897.9K | -0.5% | -$44.8K |
| T | 2023-05-25 | 2023-05-23 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $10.02 | -10.0K | 892.4K | -1% | -$100.2K |
| D | 2023-02-03 | 2023-02-01 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | M - OptEx | — | +5,027 | 913.9K | +0.6% | — |
| DM | 2023-02-03 | 2023-02-01+ | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale+OE | $9.91 | -11.6K | 912.4K | -1% | -$114.6K |
| 2022-09-14 | 2022-09-12 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $19.58 | -20.0K | 908.9K | -2% | -$391.6K | |
| M | 2022-07-08 | 2022-07-06 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $21.28 | -10.0K | 928.9K | -1% | -$212.8K |
| M | 2022-07-01 | 2022-06-29+ | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $20.20 | -20.2K | 942.6K | -2% | -$407.5K |
| 2022-04-14 | 2022-04-12 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $20.06 | -9,829 | 959.1K | -1% | -$197.2K | |
| 2022-03-21 | 2022-03-18 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $20.06 | -19.9K | 968.9K | -2% | -$399.2K | |
| 2022-03-15 | 2022-03-11 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $20.00 | -100 | 988.8K | -0.0% | -$2,000 | |
| M | 2022-01-07 | 2022-01-05 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $23.67 | -10.0K | 995.6K | -1.0% | -$236.7K |
| M | 2021-12-03 | 2021-12-01 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $23.86 | -10.0K | 998.9K | -1.0% | -$238.6K |
| M | 2021-11-04 | 2021-11-03 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $32.86 | -15.0K | 1.01M | -1% | -$492.9K |
| M | 2021-10-07 | 2021-10-06 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $32.31 | -15.0K | 1.02M | -1% | -$484.7K |
| M | 2021-09-03 | 2021-09-01 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $35.92 | -15.0K | 1.05M | -1% | -$538.7K |
| M | 2021-08-06 | 2021-08-04 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $32.54 | -15.0K | 1.06M | -1% | -$488.1K |
| M | 2021-07-08 | 2021-07-07 | MASS | 908 Devices Inc. | Brown Christopher D. | CTO | S - Sale | $33.63 | -35.0K | 1.07M | -3% | -$1.18M |
Purchase Sale Sale after option exercise All abbreviations