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MASS Exercise Disclosure
Leonhart Michele M. · SEC Form 4 · Filed Jun 12, 2026
Exercise
Reported value range
Not reported
Leonhart Michele M. Director
MASS
908 Devices Inc
MASS
Transaction date
Jun 10, 2026
Public filing date
Jun 12, 2026
Filing lag
Filed 2 days later
MASS daily price context
Close on/before transaction
$8.01
Jun 10, 2026
First close after public filing
$8.62
Jun 15, 2026
30-day return after filing
-7.77%
Through Jul 13, 2026
Source details
- Reported owner
- Not disclosed
- Source asset code
- Security
- Security
- Common Stock
- Quantity / price
- 14,083 shares
- SEC ownership
- Direct
- Transaction code
- M
- Form
- 4
- Filing identifier
- 0002027457-26-000003
Filing cohort
Transactions in this filing
Showing 4 of 4
Trades
4
Issuers
1
Estimated value
$0
Buys / sales
0 / 0
| Issuer | Transaction | Traded | Value |
|---|---|---|---|
| 908 Devices Inc. MASS | Award | Jun 11, 2026 | $0 |
| 908 Devices Inc. MASS | Award | Jun 11, 2026 | $0 |
| 908 Devices Inc. MASS Current | Exercise | Jun 10, 2026 | Not reported |
| 908 Devices Inc. MASS | Exercise | Jun 10, 2026 | $0 |