John Kenneweg
CIK: 0001836876
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
908 Devices Inc.
Discretionary Trading P&L
Holdings
Transaction History (10 total)
- Sep 17, 2026MASS
908 Devices Inc.
Sale(S)Direct5.3K shares at avg. $10.22$54K - Sep 17, 2026MASS
908 Devices Inc.
Exercise(M)Direct5.3K shares at avg. $0.96$5K - Sep 16, 2026MASS
908 Devices Inc.
Exercise(M)Direct21.4K shares at avg. $0.96$21K - Sep 16, 2026MASS
908 Devices Inc.
Sale(S)Direct21.4K shares at avg. $10.11$216K - Sep 15, 2026MASS
908 Devices Inc.
Exercise(M)Direct1K shares at avg. $0.96$960 - Sep 15, 2026MASS
908 Devices Inc.
Sale(S)Direct1K shares at avg. $10.00$10K - May 8, 2026MASS
908 Devices Inc.
Sale(S)Direct18.3K shares at avg. $8.11$148K - May 1, 2026MASS
908 Devices Inc.
Exercise(M)Direct26K shares- - May 1, 2026MASS
908 Devices Inc.
Sale(S)Direct7.8K shares at avg. $6.83$53K - Apr 28, 2026MASS
908 Devices Inc.
Award(A)DirectPerformance Stock Units
26K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 17, 2026 | MASS 908 Devices Inc. | Sale(S) | 5,257 | $10.22 | $53,727 | Direct |
| Sep 17, 2026 | MASS 908 Devices Inc. | Exercise(M) | 5,257 | $0.96 | $5,047 | Direct |
| Sep 16, 2026 | MASS 908 Devices Inc. | Exercise(M) | 21,399 | $0.96 | $20,543 | Direct |
| Sep 16, 2026 | MASS 908 Devices Inc. | Sale(S) | 21,399 | $10.11 | $216,344 | Direct |
| Sep 15, 2026 | MASS 908 Devices Inc. | Exercise(M) | 1,000 | $0.96 | $960 | Direct |
| Sep 15, 2026 | MASS 908 Devices Inc. | Sale(S) | 1,000 | $10.00 | $10,000 | Direct |
| May 8, 2026 | MASS 908 Devices Inc. | Sale(S) | 18,255 | $8.11 | $148,048 | Direct |
| May 1, 2026 | MASS 908 Devices Inc. | Exercise(M) | 26,042 | - | $0 | Direct |
| May 1, 2026 | MASS 908 Devices Inc. | Sale(S) | 7,787 | $6.83 | $53,185 | Direct |
| Apr 28, 2026 | MASS 908 Devices Inc. | Award(A) Performance Stock Units | 26,042 | - | - | Direct |
1-10 of 10 transactions
About Kenneweg John
Kenneweg John (SEC CIK 0001836876) files insider reports with the SEC as SVP, Sales & Product Marketing of 908 Devices Inc. (MASS).
Signal8 holds 5 ownership filings by Kenneweg John (1 Form 3, 4 Form 4), filed between Mar 6, 2026 and Sep 17, 2026. Those filings report 10 transactions, from Apr 28, 2026 to Sep 17, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Kenneweg John's filings is in BURLINGTON, MA.
Recent filings by Kenneweg John
- Sep 17, 2026: Open-market sale of MASS shares (Form 4, code S).
- Sep 17, 2026: Option exercise of MASS shares (Form 4, code M).
- Sep 16, 2026: Option exercise of MASS shares (Form 4, code M).
- Sep 16, 2026: Open-market sale of MASS shares (Form 4, code S).
- Sep 15, 2026: Option exercise of MASS shares (Form 4, code M).
Other insiders filing for 908 Devices Inc. (MASS)
- Brown Christopher D., Director
- Griffith Joseph H. IV, Chief Financial Officer
- AWM Investment Company, Inc., 10% Owner
- Knopp Kevin J., President and CEO
- Vann Brandi C, Director
- Leonhart Michele M., Director