John Kenneweg insider trades: 908 Devices (MASS) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where John reports to the SEC
Open-market buys and sales
12 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Sep 17, 2026 | MASS | ↓ Sell | 27,656 | $10.13 | $280K | Direct | Sep 17, 2026 (0d) |
| May 8, 2026 | MASS | ↓ Sell | 18,255 | $8.11 | $148K | Direct | May 11, 2026 (3d) |
| Apr 12, 2022 | MASS | ↓ Sell | 9,880 | $20.07 | $198K | Direct | Apr 14, 2022 (2d) |
| Mar 18, 2022 | MASS | ↓ Sell | 19,881 | $20.06 | $399K | Direct | Mar 21, 2022 (3d) |
| Mar 11, 2022 | MASS | ↓ Sell | 119 | $20.00 | $2K | Direct | Mar 15, 2022 (4d) |
| Jan 11, 2022 | MASS | ↓ Sell | 10,000 | $20.14 | $201K | Direct | Jan 12, 2022 (1d) |
| Nov 16, 2021 | MASS | ↓ Sell | 10,000 | $30.32 | $303K | Direct | Nov 18, 2021 (2d) |
| Oct 18, 2021 | MASS | ↓ Sell | 10,000 | $32.22 | $322K | Direct | Oct 19, 2021 (1d) |
| Sep 16, 2021 | MASS | ↓ Sell | 10,000 | $36.61 | $366K | Direct | Sep 17, 2021 (1d) |
| Aug 16, 2021 | MASS | ↓ Sell | 10,000 | $30.45 | $305K | Direct | Aug 17, 2021 (1d) |
| Jul 16, 2021 | MASS | ↓ Sell | 10,000 | $32.27 | $323K | Direct | Jul 20, 2021 (4d) |
| Jun 16, 2021 | MASS | ↓ Sell | 10,000 | $39.27 | $393K | Direct | Jun 21, 2021 (5d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other MASS insiders
Open-market trades in the last 12 months
About John Kenneweg's insider trades
John Kenneweg is SVP, Sales & Product Marketing at 908 Devices (MASS). Since Jun 16, 2021, John has reported no open-market purchases and 12 sales worth $3.2M on SEC Form 4. In the last 12 months: 2 sales ($428K).
Their filings also include option exercises (11 filings), grants and awards (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every MASS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.