Form 4: 908 Devices Executive Sells Shares
Insider Transaction (Form 4)
John Kenneweg, SVP, Sales & Product Marketing of 908 Devices Inc., sold 27,656 shares of common stock on September 15, 2026.
Summary
- Option exercise/conversion: acquired 1,000 Common Stock at $0.96 ($960) on September 15, 2026; holds 58,784 after (Direct).
- Open-market sale: disposed of 1,000 Common Stock at $10.00 ($10,000) on September 15, 2026; holds 57,784 after (Direct).
- Option exercise/conversion: acquired 21,399 Common Stock at $0.96 ($20,543) on September 16, 2026; holds 79,183 after (Direct).
- Open-market sale: disposed of 21,399 Common Stock at $10.11 ($216,344) on September 16, 2026; holds 57,784 after (Direct).
- Option exercise/conversion: acquired 5,257 Common Stock at $0.96 ($5,047) on September 17, 2026; holds 63,041 after (Direct).
- Open-market sale: disposed of 5,257 Common Stock at $10.22 ($53,727) on September 17, 2026; holds 57,784 after (Direct).
- Option exercise/conversion: disposed of 1,000 Stock Option (right to buy) on September 15, 2026; holds 26,656 after (Direct).
- Option exercise/conversion: disposed of 21,399 Stock Option (right to buy) on September 16, 2026; holds 5,257 after (Direct).
- Option exercise/conversion: disposed of 5,257 Stock Option (right to buy) on September 17, 2026 (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $280,070 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
John Kenneweg — Officer (SVP, Sales & Product Marketing)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-09-15 | Option exercise/conversion | Common Stock | 1,000 | $1 | $960 | 58,784 |
| 2026-09-15 | Open-market sale | Common Stock | 1,000 | $10 | $10.0K | 57,784 |
| 2026-09-16 | Option exercise/conversion | Common Stock | 21,399 | $1 | $20.5K | 79,183 |
| 2026-09-16 | Open-market sale | Common Stock | 21,399 | $10 | $216.3K | 57,784 |
| 2026-09-17 | Option exercise/conversion | Common Stock | 5,257 | $1 | $5.0K | 63,041 |
| 2026-09-17 | Open-market sale | Common Stock | 5,257 | $10 | $53.7K | 57,784 |
| 2026-09-15 | Option exercise/conversion | Stock Option (right to buy) | 1,000 | — | — | 26,656 |
| 2026-09-16 | Option exercise/conversion | Stock Option (right to buy) | 21,399 | — | — | 5,257 |
| 2026-09-17 | Option exercise/conversion | Stock Option (right to buy) | 5,257 | — | — | 0 |
Key Dates
| Date | Description |
|---|---|
| 2026-09-15 | Option exercise/conversion (1,000 shares) |
| 2026-09-15 | Open-market sale (1,000 shares) |
| 2026-09-16 | Option exercise/conversion (21,399 shares) |
| 2026-09-16 | Open-market sale (21,399 shares) |
| 2026-09-17 | Option exercise/conversion (5,257 shares) |
| 2026-09-17 | Open-market sale (5,257 shares) |
| 2026-09-15 | Option exercise/conversion (1,000 shares) |
| 2026-09-16 | Option exercise/conversion (21,399 shares) |
| 2026-09-17 | Option exercise/conversion (5,257 shares) |
Keywords
insider transaction, Form 4, MASS, 908 Devices Inc., bearish, John Kenneweg
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