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MASS Exercise Disclosure
Leonhart Michele M. · SEC Form 4 · Filed Jun 25, 2026
Exercise
Reported value range
Not reported
Leonhart Michele M. Director
MASS
908 Devices Inc
MASS
Transaction date
Jun 25, 2026
Public filing date
Jun 25, 2026
Filing lag
Filed same day
MASS daily price context
Close on/before transaction
$8.98
Jun 25, 2026
First close after public filing
$8.78
Jun 26, 2026
30-day return after filing
-18.79%
Through Jul 27, 2026
Source details
- Reported owner
- Not disclosed
- Source asset code
- Security
- Security
- Common Stock
- Quantity / price
- 6,486 shares
- SEC ownership
- Direct
- Transaction code
- M
- Form
- 4
- Filing identifier
- 0002027457-26-000005
Filing cohort
Transactions in this filing
Showing 2 of 2
Trades
2
Issuers
1
Estimated value
$0
Buys / sales
0 / 0
| Issuer | Transaction | Traded | Value |
|---|---|---|---|
| 908 Devices Inc. MASS Current | Exercise | Jun 25, 2026 | Not reported |
| 908 Devices Inc. MASS | Exercise | Jun 25, 2026 | $0 |