Michael S. Turner
CIK: 0001836524
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (13 total)
- Sep 16, 2026HAWK
HawkEye 360, Inc.
Sale(S)Direct18.3K shares at avg. $16.24$296K - Sep 15, 2026HAWK
HawkEye 360, Inc.
Sale(S)Direct8.3K shares at avg. $16.29$134K - Jun 18, 2025MASS
908 Devices Inc.
Sale(S)Direct1.4K shares at avg. $7.50$10K - Jun 17, 2025MASS
908 Devices Inc.
Sale(S)Direct7.1K shares at avg. $7.51$54K - Jun 16, 2025MASS
908 Devices Inc.
Sale(S)Direct16.1K shares at avg. $7.51$121K - Mar 3, 2025MASS
908 Devices Inc.
Award(A)DirectRestricted Stock Units
125.5K shares- - Mar 3, 2025MASS
908 Devices Inc.
Award(A)DirectStock Option (option to buy)
57.1K shares- - Feb 3, 2025MASS
908 Devices Inc.
Sale(S)Direct3.8K shares at avg. $2.32$9K - Feb 3, 2025MASS
908 Devices Inc.
Sale(S)Direct4.2K shares at avg. $2.32$10K - Feb 3, 2025MASS
908 Devices Inc.
Sale(S)Direct1.7K shares at avg. $2.36$4K - Feb 1, 2025MASS
908 Devices Inc.
Exercise(M)Direct10.8K shares- - Feb 1, 2025MASS
908 Devices Inc.
Exercise(M)Direct9.9K shares- - Feb 1, 2025MASS
908 Devices Inc.
Exercise(M)Direct4.4K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 16, 2026 |  HAWK HawkEye 360, Inc. | Sale(S) | 18,256 | $16.24 | $296,419 | Direct |
| Sep 15, 2026 | HAWK HawkEye 360, Inc. | Sale(S) | 8,250 | $16.29 | $134,383 | Direct |
| Jun 18, 2025 |  MASS 908 Devices Inc. | Sale(S) | 1,373 | $7.50 | $10,298 | Direct |
| Jun 17, 2025 | MASS 908 Devices Inc. | Sale(S) | 7,148 | $7.51 | $53,653 | Direct |
| Jun 16, 2025 | MASS 908 Devices Inc. | Sale(S) | 16,082 | $7.51 | $120,839 | Direct |
| Mar 3, 2025 | MASS 908 Devices Inc. | Award(A) Restricted Stock Units | 125,470 | - | - | Direct |
| Mar 3, 2025 | MASS 908 Devices Inc. | Award(A) Stock Option (option to buy) | 57,111 | - | - | Direct |
| Feb 3, 2025 | MASS 908 Devices Inc. | Sale(S) | 3,807 | $2.32 | $8,831 | Direct |
| Feb 3, 2025 | MASS 908 Devices Inc. | Sale(S) | 4,162 | $2.32 | $9,654 | Direct |
| Feb 3, 2025 | MASS 908 Devices Inc. | Sale(S) | 1,703 | $2.36 | $4,014 | Direct |
| Feb 1, 2025 | MASS 908 Devices Inc. | Exercise(M) | 10,834 | - | - | Direct |
| Feb 1, 2025 | MASS 908 Devices Inc. | Exercise(M) | 9,909 | - | - | Direct |
| Feb 1, 2025 | MASS 908 Devices Inc. | Exercise(M) | 4,427 | - | - | Direct |
1-13 of 13 transactions
About Turner Michael S.
Turner Michael S. (SEC CIK 0001836524) files insider reports with the SEC as Chief Legal Officer of HawkEye 360, Inc. (HAWK) and Chief Legal & Admin Officer of 908 Devices Inc. (MASS).
Signal8 holds 5 ownership filings by Turner Michael S. (1 Form 3, 4 Form 4), filed between Feb 4, 2025 and Sep 17, 2026. Those filings report 13 transactions, from Feb 1, 2025 to Sep 16, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Turner Michael S.'s filings is in HERNDON, VA.
Recent filings by Turner Michael S.
- Sep 16, 2026: Open-market sale of HAWK shares (Form 4, code S).
- Sep 15, 2026: Open-market sale of HAWK shares (Form 4, code S).
- Jun 18, 2025: Open-market sale of MASS shares (Form 4, code S).
- Jun 17, 2025: Open-market sale of MASS shares (Form 4, code S).
- Jun 16, 2025: Open-market sale of MASS shares (Form 4, code S).
Other insiders filing for HawkEye 360, Inc. (HAWK)
- Herndon Charles Christopher, Chief Information Officer
- Serafini John Sheldon, President and CEO
- Searle Craig Chih-Meng, Chief Financial Officer
- MONEY ARTHUR L, Director
- Finelli Francis Alphonse, Director
- Insight Holdings Group, LLC, 10% Owner