Michele M. Leonhart
CIK: 0002027457
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
908 Devices Inc.
Discretionary Trading P&L
Holdings
Transaction History (7 total)
- Jun 25, 2026MASS
908 Devices Inc.
Exercise(M)Direct6.5K shares- - Jun 11, 2026MASS
908 Devices Inc.
Award(A)DirectRestricted Stock Units
13.7K shares- - Jun 11, 2026MASS
908 Devices Inc.
Award(A)DirectStock Option (option to buy)
6.2K shares- - Jun 10, 2026MASS
908 Devices Inc.
Exercise(M)Direct14.1K shares- - Jun 25, 2025MASS
908 Devices Inc.
Exercise(M)Direct6.5K shares- - Jun 12, 2025MASS
908 Devices Inc.
Award(A)DirectRestricted Stock Units
14.1K shares- - Jun 12, 2025MASS
908 Devices Inc.
Award(A)DirectStock Option (option to buy)
6.5K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jun 25, 2026 | MASS 908 Devices Inc. | Exercise(M) | 6,486 | - | $0 | Direct |
| Jun 11, 2026 | MASS 908 Devices Inc. | Award(A) Restricted Stock Units | 13,656 | - | - | Direct |
| Jun 11, 2026 | MASS 908 Devices Inc. | Award(A) Stock Option (option to buy) | 6,209 | - | - | Direct |
| Jun 10, 2026 | MASS 908 Devices Inc. | Exercise(M) | 14,083 | - | $0 | Direct |
| Jun 25, 2025 | MASS 908 Devices Inc. | Exercise(M) | 6,485 | - | - | Direct |
| Jun 12, 2025 | MASS 908 Devices Inc. | Award(A) Restricted Stock Units | 14,083 | - | - | Direct |
| Jun 12, 2025 | MASS 908 Devices Inc. | Award(A) Stock Option (option to buy) | 6,516 | - | - | Direct |
1-7 of 7 transactions
About Leonhart Michele M.
Leonhart Michele M. (SEC CIK 0002027457) files insider reports with the SEC as Director of 908 Devices Inc. (MASS).
Signal8 holds 4 ownership filings by Leonhart Michele M., all Form 4s, filed between Jun 13, 2025 and Jun 25, 2026. Those filings report 7 transactions, from Jun 12, 2025 to Jun 25, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Leonhart Michele M.'s filings is in BURLINGTON, MA.
Recent filings by Leonhart Michele M.
- Jun 25, 2026: Option exercise of MASS shares (Form 4, code M).
- Jun 11, 2026: Grants or awards of MASS derivative securities (2 lines, Form 4, code A).
- Jun 10, 2026: Option exercise of MASS shares (Form 4, code M).
- Jun 25, 2025: Option exercise of MASS shares (Form 4, code M).
- Jun 12, 2025: Grants or awards of MASS derivative securities (2 lines, Form 4, code A).
Other insiders filing for 908 Devices Inc. (MASS)
- Brown Christopher D., Director
- Griffith Joseph H. IV, Chief Financial Officer
- AWM Investment Company, Inc., 10% Owner
- Kenneweg John, SVP, Sales & Product Marketing
- Knopp Kevin J., President and CEO
- Vann Brandi C, Director