908 Devices ($MASS) Insider Trading & Smart Money Activity
908 Devices Inc. ($MASS) has 27 insider trades on file. In the last 12 months on the open market, no insider bought and 6 insiders sold ($1.62M), net -$1.62M.
- Insider buyers (12 mo)
- 0
- Insider sellers (12 mo)
- 6
- Net insider $ (12 mo)
- -$1.62M
- Congress trades (12 mo)
- 0
- 13F moves on file
- 0
- Analyst ratings on file
- 0
MASS insider buying and selling by quarter
| Quarter | Insider buys | Insider sales | Congress buys / sales | 13F added / cut |
|---|---|---|---|---|
| Q1 2026 | 0 | 0 | 0 / 0 | 0 / 0 |
| Q2 2026 | 0 | 6 · $709.54K | 0 / 0 | 0 / 0 |
| Q3 2026 | 0 | 3 · $491.20K | 0 / 0 | 0 / 0 |
| Q4 2026 | 0 | 2 · $421.85K | 0 / 0 | 0 / 0 |
Insider buys and sales count open-market trades only (Form 4 codes P and S). Grants, option exercises and tax withholding are left out.
All MASS insider, congress, 13F and analyst activity
| Date | Source | Who | Action | Shares | Value / amount | ΔOwn | 1W | 1M | 6M | Filing | Story |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Insider | Brown Christopher D.Director | Sell (Open-market sale) 10b5-1 | 30K sh | $356.70K | +0.4% | — | |||||
| Insider | Griffith Joseph H. IVChief Financial Officer | Sell (Open-market sale) 10b5-1 | 5K sh | $65.15K | -1.9% | — | |||||
| Insider | AWM Investment Company, Inc.10% Owner | Sell (Open-market sale) | 18K sh | $207.32K | +4.1% | — | |||||
| Insider | AWM Investment Company, Inc.10% Owner | Sell (Open-market sale) | 24K sh | $272.63K | +8.6% | — | |||||
| Insider | AWM Investment Company, Inc.10% Owner | Sell (Open-market sale) | 1K sh | $11.25K | +12.8% | — | |||||
| Insider | Michele Leonhart | Sell (Option exercise) | 6.49K sh | -3.2% | -20.6% | — | |||||
| Insider | Michele Leonhart | Buy (Option exercise) | 6.49K sh | -3.2% | -20.6% | — | |||||
| Insider | Kevin KnoppPresident and CEO | Sell (Open-market sale) 10b5-1 | 16.39K sh | $149.13K | -3.2% | -20.6% | — | ||||
| Insider | Kevin KnoppPresident and CEO | Sell (Open-market sale) 10b5-1 | 40.53K sh | $370.49K | -1.0% | -20.4% | — | ||||
| Insider | Kevin KnoppPresident and CEO | Sell (Open-market sale) 10b5-1 | 3.42K sh | $31K | -0.3% | -18.6% | — | ||||
| Insider | Christopher Brown | Sell (Open-market sale) 10b5-1 | 9.90K sh | $89.50K | -0.3% | -18.6% | Read | ||||
| Insider | Inc. Awm Investment Company | Sell (Open-market sale) | 3.05K sh | $27.45K | -0.3% | -18.6% | — | ||||
| Insider | Inc. Awm Investment Company | Sell (Open-market sale) | 4.67K sh | $41.97K | +1.7% | -16.4% | — | ||||
| Insider | Brandi Vann | Buy (Grant or award) | 6.21K sh | +7.7% | -3.3% | — | |||||
| Insider | Brandi Vann | Buy (Grant or award) | 6.21K sh | +7.7% | -3.3% | — | |||||
| Insider | Mark Spoto | Buy (Grant or award) | 6.21K sh | +7.7% | -3.3% | — | |||||
| Insider | Mark Spoto | Buy (Grant or award) | 13.66K sh | +7.7% | -3.3% | — | |||||
| Insider | Michele Leonhart | Buy (Grant or award) | 6.21K sh | +7.7% | -3.3% | — | |||||
| Insider | Michele Leonhart | Buy (Grant or award) | 13.66K sh | +7.7% | -3.3% | — | |||||
| Insider | Anthony Hunt | Buy (Grant or award) | 6.21K sh | +7.7% | -3.3% | — | |||||
| Insider | Anthony Hunt | Buy (Grant or award) | 13.66K sh | +7.7% | -3.3% | — | |||||
| Insider | Kevin Hrusovsky | Buy (Grant or award) | 13.66K sh | +7.7% | -3.3% | — | |||||
| Insider | Kevin Hrusovsky | Buy (Grant or award) | 13.66K sh | +7.7% | -3.3% | — | |||||
| Insider | Fenel Eloi | Buy (Grant or award) | 13.66K sh | +7.7% | -3.3% | — | |||||
| Insider | Fenel Eloi | Buy (Grant or award) | 6.21K sh | +7.7% | -3.3% | — | |||||
| Insider | Keith Crandell | Buy (Grant or award) | 6.21K sh | +7.7% | -3.3% | — | |||||
| Insider | Keith Crandell | Buy (Grant or award) | 13.66K sh | +7.7% | -3.3% | — |
1W / 1M / 6M = how MASS moved from the trade or filing date.
Insider trading in MASS: who is buying and selling
| Insider | Role | Trades | Open-market net | Shares held | Last trade |
|---|---|---|---|---|---|
| Brown Christopher D. | Director | 1 | -$356.70K | Oct 7, 2026 | |
| Griffith Joseph H. IV | Chief Financial Officer | 1 | -$65.15K | Oct 6, 2026 | |
| AWM Investment Company, Inc. | 10% Owner | 3 | -$491.20K | Sep 29, 2026 | |
| Michele Leonhart | 4 | — | Jun 25, 2026 | ||
| Kevin Knopp | President and CEO | 3 | -$550.62K | Jun 25, 2026 | |
| Inc. Awm Investment Company | 2 | -$69.42K | Jun 23, 2026 | ||
| Christopher Brown | 1 | -$89.50K | Jun 23, 2026 | ||
| Brandi Vann | 2 | — | Jun 11, 2026 | ||
| Mark Spoto | 2 | — | Jun 11, 2026 | ||
| Anthony Hunt | 2 | — | Jun 11, 2026 | ||
| Kevin Hrusovsky | 2 | — | Jun 11, 2026 | ||
| Fenel Eloi | 2 | — | Jun 11, 2026 | ||
| Keith Crandell | 2 | — | Jun 11, 2026 |
Frequently asked questions
Are MASS insiders buying or selling?
Over the last 12 months 0 insiders made 0 open-market purchases worth $0 and 6 insiders made 11 open-market sales worth $1.62M, a net -$1.62M.
What is the latest insider trade in MASS?
Brown Christopher D., Director filed a sell (open-market sale) of 30K sh worth $356.70K on Oct 7, 2026.
Other medical devices stocks
Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.
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