Insiders / Griffith Joseph H. IV
Griffith Joseph H. IV
CIK 1431531personinsider
Companies
1
First seen
Feb 3, 2026
Last activity
Feb 3, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| 908 Devices Inc. ยท MASS | 139,896 | โ |
All securities held
3 positions ยท latest reported per filing
| Company | Security | Shares |
|---|---|---|
| 908 Devices Inc. | Common Stock | 139,896 |
| 908 Devices Inc. | Restricted Stock UnitsDerivative | 121,164 |
| 908 Devices Inc. | Stock Option (option to buy)Derivative | 52,967 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares ฮ | Position after | Impact |
|---|---|---|---|---|---|---|
| Feb 2, 2026 | Sell | MASS 908 Devices Inc. Common Stock | $143.2K | -23K -14.21% | 139,896 0.34% of shares | medium |
| Feb 2, 2026 | Grant | MASS 908 Devices Inc. Stock Option (option to buy) | โ | +53K | 52,967 0.13% of shares | low |
| Feb 2, 2026 | Grant | MASS 908 Devices Inc. Restricted Stock Units | โ | +121K | 121,164 0.29% of shares | low |
| Feb 1, 2026 | Exercise | MASS 908 Devices Inc. Restricted Stock Units | โ | -43K -33.33% | 86,945 0.21% of shares | low |
| Feb 1, 2026 | Exercise | MASS 908 Devices Inc. Restricted Stock Units | โ | -11K -33.33% | 22,521 0.05% of shares | low |
| Feb 1, 2026 | Exercise | MASS 908 Devices Inc. Restricted Stock Units | โ | -10K -50.00% | 10,306 0.02% of shares | low |
| Feb 1, 2026 | Exercise | MASS 908 Devices Inc. Restricted Stock Units | โ | -5K -100.00% | 0 0.00% of shares | low |
| Feb 1, 2026 | Exercise | MASS 908 Devices Inc. Common Stock | โ | +43K +36.35% | 163,071 0.39% of shares | low |
| Feb 1, 2026 | Exercise | MASS 908 Devices Inc. Common Stock | โ | +11K +10.39% | 119,598 0.29% of shares | low |
| Feb 1, 2026 | Exercise | MASS 908 Devices Inc. Common Stock | โ | +10K +10.51% | 108,338 0.26% of shares | low |