Brown Christopher D. (CIK 1836988) reported 18 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-07-07). Recent activity: Sell MASS (2,200 shares), Sell MASS (20,000 shares), Sell MASS (9,900 shares), Sell MASS (100 shares), Sell MASS (30,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-07 | 908 Devices Inc. (MASS) | Director | Sell | 2,200 | $19,844 |
| 2026-07-02 | 908 Devices Inc. (MASS) | Director | Sell | 20,000 | $176,800 |
| 2026-06-25 | 908 Devices Inc. (MASS) | Director | Sell | 9,900 | $89,496 |
| 2026-06-05 | 908 Devices Inc. (MASS) | Director | Sell | 100 | $900 |
| 2026-05-29 | 908 Devices Inc. (MASS) | Director | Sell | 30,000 | $270,000 |
| 2026-05-07 | 908 Devices Inc. (MASS) | Director | Sell | 20,000 | $144,600 |
| 2026-04-10 | 908 Devices Inc. (MASS) | Director | Sell | 15,030 | $105,962 |
| 2026-04-10 | 908 Devices Inc. (MASS) | Director | Sell | 7,392 | $52,040 |
| 2026-04-10 | 908 Devices Inc. (MASS) | Director | Sell | 17,578 | $124,276 |
| 2026-02-03 | 908 Devices Inc. (MASS) | Director | Buy | 5,027 | $0 |
| 2026-02-03 | 908 Devices Inc. (MASS) | Director | Buy | 7,418 | $0 |
| 2026-02-03 | 908 Devices Inc. (MASS) | Director | Buy | 10,992 | $0 |
| 2025-02-04 | 908 Devices Inc. (MASS) | Chief Product Officer | Buy | 5,027 | $0 |
| 2025-02-04 | 908 Devices Inc. (MASS) | Chief Product Officer | Buy | 7,418 | $0 |
| 2025-02-04 | 908 Devices Inc. (MASS) | Chief Product Officer | Buy | 10,991 | $0 |
| 2025-02-04 | 908 Devices Inc. (MASS) | Chief Product Officer | Sell | 1,667 | $3,934 |
| 2025-02-04 | 908 Devices Inc. (MASS) | Chief Product Officer | Sell | 2,459 | $5,754 |
| 2025-02-04 | 908 Devices Inc. (MASS) | Chief Product Officer | Sell | 3,641 | $8,484 |
Source: SEC Form 4 filings · as of 2026-07-07