Brown Christopher D.
SEC insider (Form 3/4/5 filer). CIK 0001836988. Director at 908 Devices Inc. (MASS). 26 reported Form 4/5 transactions since Sep 2024; latest on Oct 7, 2026. Located in BURLINGTON, MA.
Companies Brown Christopher D. has filed insider reports for
- 908 Devices Inc. (MASS): Director
Brown Christopher D.
CIK: 0001836988
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)18 (69.2%)
Position reduction
Option Exercises (M)8 (30.8%)
Derivative conversions
Awards (A)0 (0.0%)
Compensation grants
Other (G, F, J, C, D, …)0 (0.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
MASS
908 Devices Inc.
Director
Discretionary Trading P&L
Holdings
Transaction History (26 total)
- Oct 7, 2026MASS
908 Devices Inc.
SaleDirect30K shares at avg. $11.89$357K - Oct 7, 2026MASS
908 Devices Inc.
ExerciseDirect60K shares at avg. $1.75$105K - Sep 2, 2026MASS
908 Devices Inc.
SaleDirect30K shares at avg. $10.58$317K - Aug 11, 2026MASS
908 Devices Inc.
SaleDirect8.4K shares at avg. $9.23$77K - Aug 10, 2026MASS
908 Devices Inc.
SaleDirect9.4K shares at avg. $9.03$85K - Aug 5, 2026MASS
908 Devices Inc.
SaleDirect20K shares at avg. $8.49$170K - Jul 2, 2026MASS
908 Devices Inc.
SaleDirect2.2K shares at avg. $9.02$20K - Jun 30, 2026MASS
908 Devices Inc.
SaleDirect20K shares at avg. $8.84$177K - Jun 23, 2026MASS
908 Devices Inc.
SaleDirect9.9K shares at avg. $9.04$89K - Jun 4, 2026MASS
908 Devices Inc.
SaleDirect100 shares at avg. $9.00$900
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 7, 2026 | MASS 908 Devices Inc. | Sale | 30,000 | $11.89 | $356,700 | Direct |
| Oct 7, 2026 | MASS 908 Devices Inc. | Exercise | 60,000 | $1.75 | $105,000 | Direct |
| Sep 2, 2026 | MASS 908 Devices Inc. | Sale | 30,000 | $10.58 | $317,400 | Direct |
| Aug 11, 2026 | MASS 908 Devices Inc. | Sale | 8,358 | $9.23 | $77,144 | Direct |
| Aug 10, 2026 | MASS 908 Devices Inc. | Sale | 9,442 | $9.03 | $85,261 | Direct |
| Aug 5, 2026 | MASS 908 Devices Inc. | Sale | 20,000 | $8.49 | $169,800 | Direct |
| Jul 2, 2026 | MASS 908 Devices Inc. | Sale | 2,200 | $9.02 | $19,844 | Direct |
| Jun 30, 2026 | MASS 908 Devices Inc. | Sale | 20,000 | $8.84 | $176,800 | Direct |
| Jun 23, 2026 | MASS 908 Devices Inc. | Sale | 9,900 | $9.04 | $89,496 | Direct |
| Jun 4, 2026 | MASS 908 Devices Inc. | Sale | 100 | $9.00 | $900 | Direct |
1-10 of 26 transactions