Griffith Joseph H. IV (CIK 1431531) reported 11 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-27). Recent activity: Sell MASS (11,459 shares), Sell MASS (6,940 shares), Buy MASS (5,102 shares), Buy MASS (10,306 shares), Buy MASS (11,260 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-27 | 908 Devices Inc. (MASS) | Chief Financial Officer | Sell | 11,459 | $125,476 |
| 2026-05-29 | 908 Devices Inc. (MASS) | Chief Financial Officer | Sell | 6,940 | $62,668 |
| 2026-02-03 | 908 Devices Inc. (MASS) | Chief Financial Officer | Buy | 5,102 | $0 |
| 2026-02-03 | 908 Devices Inc. (MASS) | Chief Financial Officer | Buy | 10,306 | $0 |
| 2026-02-03 | 908 Devices Inc. (MASS) | Chief Financial Officer | Buy | 11,260 | $0 |
| 2026-02-03 | 908 Devices Inc. (MASS) | Chief Financial Officer | Buy | 43,473 | $0 |
| 2026-02-03 | 908 Devices Inc. (MASS) | Chief Financial Officer | Sell | 23,175 | $143,222 |
| 2025-10-06 | 908 Devices Inc. (MASS) | Chief Financial Officer | Sell | 708 | $6,400 |
| 2025-10-06 | 908 Devices Inc. (MASS) | Chief Financial Officer | Sell | 4,292 | $38,843 |
| 2025-09-23 | 908 Devices Inc. (MASS) | Chief Financial Officer | Sell | 5,000 | $35,350 |
| 2025-06-06 | 908 Devices Inc. (MASS) | Chief Financial Officer | Sell | 6,940 | $49,135 |
来源：SEC Form 4 申报文件 · 截至 2026-08-27