MASS908 Devices Inc.
Insider trading & SEC Form 4 activity — last 90 days. Latest filing: 2026-10-09.
Insider buys (90d)
$0.00
Insider sells (90d)
$4.67M
Net flow
$-4.67M
Filings
14
Buy transactions
0
Sell transactions
22
Distinct insiders
6
Last close (cached)
$11.80
as of 2026-10-21
1d return
+2.5%
5d return
-0.3%
1m return
+5.5%
Top insiders trading MASS (90d)
Recent transactions (27)
| Filed | Txn date | Insider | Code | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-10-09 | 2026-10-07 | Brown Christopher D. | Exer. | 60,000 | $1.75 | $105.0K | open → |
| 2026-10-09 | 2026-10-07 | Brown Christopher D. | Sale | 30,000 | $11.89 | $356.7K | open → |
| 2026-10-08 | 2026-10-06 | Griffith Joseph H. IV | Sale | 5,000 | $13.03 | $65.2K | open → |
| 2026-10-01 | 2026-09-29 | AWM Investment Company, Inc. 10% | Sale | 18,000 | $11.52 | $207.3K | open → |
| 2026-09-25 | 2026-09-24 | AWM Investment Company, Inc. 10% | Sale | 24,000 | $11.36 | $272.6K | open → |
| 2026-09-25 | 2026-09-23 | AWM Investment Company, Inc. 10% | Sale | 1,000 | $11.25 | $11.3K | open → |
| 2026-09-17 | 2026-09-17 | Kenneweg John | Sale | 5,257 | $10.22 | $53.7K | open → |
| 2026-09-17 | 2026-09-17 | Kenneweg John | Exer. | 5,257 | $0.96 | $5.0K | open → |
| 2026-09-17 | 2026-09-16 | Kenneweg John | Sale | 21,399 | $10.11 | $216.3K | open → |
| 2026-09-17 | 2026-09-16 | Kenneweg John | Exer. | 21,399 | $0.96 | $20.5K | open → |
| 2026-09-17 | 2026-09-15 | Kenneweg John | Sale | 1,000 | $10.00 | $10.0K | open → |
| 2026-09-17 | 2026-09-15 | Kenneweg John | Exer. | 1,000 | $0.96 | $960.00 | open → |
| 2026-09-04 | 2026-09-02 | Brown Christopher D. | Sale | 30,000 | $10.58 | $317.4K | open → |
| 2026-08-27 | 2026-08-25 | Griffith Joseph H. IV | Sale | 11,459 | $10.95 | $125.5K | open → |
| 2026-08-25 | 2026-08-21 | AWM Investment Company, Inc. 10% | Sale | 41,578 | $10.61 | $441.2K | open → |
| 2026-08-25 | 2026-08-20 | AWM Investment Company, Inc. 10% | Sale | 8,422 | $10.52 | $88.6K | open → |
| 2026-08-17 | 2026-08-17 | Knopp Kevin J. | Sale | 20,000 | $10.35 | $207.0K | open → |
| 2026-08-17 | 2026-08-13 | Knopp Kevin J. | Sale | 7,622 | $10.06 | $76.7K | open → |
| 2026-08-12 | 2026-08-11 | Brown Christopher D. | Sale | 8,358 | $9.23 | $77.1K | open → |
| 2026-08-12 | 2026-08-10 | Brown Christopher D. | Sale | 9,442 | $9.03 | $85.3K | open → |
| 2026-08-12 | 2026-08-12 | Knopp Kevin J. | Sale | 2,747 | $10.07 | $27.7K | open → |
| 2026-08-12 | 2026-08-11 | Knopp Kevin J. | Sale | 30,170 | $10.16 | $306.5K | open → |
| 2026-08-12 | 2026-08-11 | Knopp Kevin J. | Sale | 115,748 | $9.83 | $1.14M | open → |
| 2026-08-12 | 2026-08-10 | Knopp Kevin J. | Sale | 348 | $9.06 | $3.2K | open → |
| 2026-08-07 | 2026-08-05 | Brown Christopher D. | Sale | 20,000 | $8.49 | $169.8K | open → |
| 2026-08-06 | 2026-08-04 | AWM Investment Company, Inc. 10% | Sale | 50,000 | $8.36 | $417.8K | open → |
| 2026-08-03 | 2026-08-01 | Vann Brandi C | Exer. | 5,192 | $0.00 | $0.00 | open → |
Other tickers these insiders trade
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