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MASS Exercise Disclosure
Brown Christopher D. · SEC Form 4 · Filed Oct 9, 2026
Exercise
Calculated transaction value
$0
Brown Christopher D. Director
MASS
908 Devices Inc
MASS
Transaction date
Oct 7, 2026
Public filing date
Oct 9, 2026
Filing lag
Filed 2 days later
MASS daily price context
Close on/before transaction
$11.78
Oct 7, 2026
First close after public filing
--
Unavailable
30-day return after filing
--
Through Unavailable
Source details
- Reported owner
- Not disclosed
- Source asset code
- Derivative
- Security
- Stock Option (option to buy) on Common Stock
- Quantity / price
- 60,000 shares @ $0
- SEC ownership
- Direct
- Transaction code
- M
- Form
- 4
- Filing identifier
- 0001836988-26-000027
Filing cohort
Transactions in this filing
Showing 3 of 3
Trades
3
Issuers
1
Estimated value
$461.7K
Buys / sales
0 / 1
| Issuer | Transaction | Traded | Value |
|---|---|---|---|
| 908 Devices Inc. MASS | Exercise | Oct 7, 2026 | $105K |
| 908 Devices Inc. MASS Current | Exercise | Oct 7, 2026 | $0 |
| 908 Devices Inc. MASS | Sale | Oct 7, 2026 | $356.7K |