908 Devices Inc. (MASS)
$10.73-$0.37 (-3.33%) Today
Joseph H. Griffith IV - Officer908 Devices Inc develops a suite of purpose-built handheld devices for point-of-need chemical analysis. Leveraging mass spectrometry, optical spectroscopy, analytics and machine learning technologies, the company makes devices that are smaller and more accessible than conventional laboratory instruments. Its devices, including MX908, ThreatID, XplorIR and VipIR, are used to analyze unknown materials and provide actionable answers in health, safety and defense technology applications, addressing the fentanyl and illicit drug crisis, toxic carcinogen exposure and security threats. The company reimagines mass spectrometry technology by developing smaller, lower-cost and simpler-to-operate devices compared to conventional instruments, and generates maximum revenue from the United States.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 27 | 491,459 | $4.65M |
| Grant or award | 14 | 139,055 | |
| Option exercise | 16 | 192,352 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
53 Form 4 filings on record, the earliest from Dec 16, 2024, newest first. Filing history page 1 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Joseph H. Griffith IV - Officer | Open-market sale | Common Stock | 11,459 | $10.95 | $125K | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | Common Stock | 8,422 | $10.52 | $89K | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | Common Stock | 41,578 | $10.61 | $441K | |
| Kevin J. Knopp - Officer | Open-market sale | Common Stock | 7,622 | $10.06 | $77K | |
| Kevin J. Knopp - Officer | Open-market sale | Common Stock | 20,000 | $10.35 | $207K | |
| Christopher D. Brown - Director | Open-market sale | Common Stock | 9,442 | $9.03 | $85K | |
| Christopher D. Brown - Director | Open-market sale | Common Stock | 8,358 | $9.23 | $77K | |
| Kevin J. Knopp - Officer | Open-market sale | Common Stock | 348 | $9.06 | $3K | |
| Kevin J. Knopp - Officer | Open-market sale | Common Stock | 115,748 | $9.83 | $1.14M | |
| Kevin J. Knopp - Officer | Open-market sale | Common Stock | 30,170 | $10.16 | $307K | |
| Kevin J. Knopp - Officer | Open-market sale | Common Stock | 2,747 | $10.07 | $28K | |
| Christopher D. Brown - Director | Open-market sale | Common Stock | 20,000 | $8.49 | $170K | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | Common Stock | 50,000 | $8.36 | $418K | |
| Brandi C. Vann - Director | Option exercise | Common Stock | 5,192 | - | - | |
| Brandi C. Vann - Director | Option exercise | Restricted Stock Unit | 5,192 | $0.00 | - | |
| Kevin J. Knopp - Officer | Open-market sale | Common Stock | 222 | $9.07 | $2K | |
| Christopher D. Brown | Open-market sale | Common Stock | 2,200 | $9.02 | $20K | |
| Christopher D. Brown | Open-market sale | Common Stock | 20,000 | $8.84 | $177K | |
| Kevin J. Knopp - Officer | Open-market sale | Common Stock | 2,798 | $9.09 | $25K | |
| Christopher D. Brown | Open-market sale | Common Stock | 9,900 | $9.04 | $89K | |
| Kevin J. Knopp - Officer | Open-market sale | Common Stock | 3,422 | $9.06 | $31K | |
| Kevin J. Knopp - Officer | Open-market sale | Common Stock | 40,535 | $9.14 | $370K | |
| Kevin J. Knopp - Officer | Open-market sale | Common Stock | 16,388 | $9.10 | $149K | |
| Michele M. Leonhart | Option exercise | Restricted Stock Units | 6,486 | $0.00 | - | |
| Michele M. Leonhart | Option exercise | Common Stock | 6,486 | - | - | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | Common Stock | 4,668 | $8.99 | $42K | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | Common Stock | 3,050 | $9.00 | $27K | |
| Brandi C. Vann | Grant or award | Restricted Stock Units | 13,656 | $0.00 | - | |
| Brandi C. Vann | Grant or award | Stock Option (option to buy) | 6,209 | $0.00 | - | |
| Michele M. Leonhart | Grant or award | Stock Option (option to buy) | 6,209 | $0.00 | - | |
| Michele M. Leonhart | Option exercise | Common Stock | 14,083 | - | - | |
| Michele M. Leonhart | Option exercise | Restricted Stock Units | 14,083 | $0.00 | - | |
| Michele M. Leonhart | Grant or award | Restricted Stock Units | 13,656 | $0.00 | - | |
| E. Kevin Hrusovsky | Option exercise | Common Stock | 14,083 | - | - | |
| E. Kevin Hrusovsky | Option exercise | Restricted Stock Units | 14,083 | $0.00 | - | |
| E. Kevin Hrusovsky | Grant or award | Restricted Stock Units | 13,656 | $0.00 | - | |
| E. Kevin Hrusovsky | Grant or award | Stock Option (option to buy) | 6,209 | $0.00 | - | |
| Anthony Hunt | Grant or award | Restricted Stock Units | 13,656 | $0.00 | - | |
| Anthony Hunt | Grant or award | Stock Option (option to buy) | 6,209 | $0.00 | - | |
| Anthony Hunt | Option exercise | Common Stock | 14,083 | - | - | |
| Anthony Hunt | Option exercise | Restricted Stock Units | 14,083 | $0.00 | - | |
| Fenel M. Eloi | Option exercise | Restricted Stock Units | 14,083 | $0.00 | - | |
| Fenel M. Eloi | Grant or award | Restricted Stock Units | 13,656 | $0.00 | - | |
| Fenel M. Eloi | Option exercise | Common Stock | 14,083 | - | - | |
| Fenel M. Eloi | Grant or award | Stock Option (option to buy) | 6,209 | $0.00 | - | |
| Keith Crandell | Option exercise | Restricted Stock Units | 14,083 | $0.00 | - | |
| Keith Crandell | Grant or award | Restricted Stock Units | 13,656 | $0.00 | - | |
| Keith Crandell | Grant or award | Stock Option (option to buy) | 6,209 | $0.00 | - | |
| Keith Crandell | Option exercise | Common Stock | 14,083 | - | - | |
| Mark Spoto | Grant or award | Restricted Stock Units | 13,656 | $0.00 | - | |
| Mark Spoto | Grant or award | Stock Option (option to buy) | 6,209 | $0.00 | - | |
| Mark Spoto | Option exercise | Common Stock | 14,083 | - | - | |
| Mark Spoto | Option exercise | Restricted Stock Units | 14,083 | $0.00 | - | |
| Christopher D. Brown | Open-market sale | Common Stock | 100 | $9.00 | $900 | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | 908 DEVICES, INC. | 2,500 | $8.95 | $22K | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | 908 DEVICES, INC. | 39,782 | $8.97 | $357K | |
| Christopher D. Brown | Open-market sale | Common Stock | 20,000 | $8.73 | $175K | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | 908 DEVICES, INC. | 1,500 | $8.25 | $12K | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | 908 DEVICES, INC. | 15,000 | $8.25 | $124K | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | 908 DEVICES, INC. | 170,442 | $8.66 | $1.48M | |
| Joseph H. Griffith IV - Officer | Open-market sale | Common Stock | 6,940 | $9.03 | $63K | |
| Christopher D. Brown | Open-market sale | Common Stock | 30,000 | $9.00 | $270K | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | Common Stock | 5,000 | $8.25 | $41K |
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Joseph Griffith | Officer | 11,459 | $125K | View on EDGAR | |
| Kevin Knopp | Officer | 20,000 | $205K | View on EDGAR | |
| Kevin Knopp | Officer | 140,000 | $1.35M | View on EDGAR |
908 Devices Inc. (MASS) had 26 insider filings in the last 90 days, with the most recent on 2026-08-27. The full record for MASS runs to 53 Form 4 filings, the earliest from 2024-12-16. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of MASS were filed in the last 90 days.
27 insider sales of MASS were filed in the last 90 days, totaling $4.65M.
This page tracks MASS Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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