908 Devices Inc. (MASS)
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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 2 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| John Kenneweg - Officer | Open-market sale | Common Stock | 18,255 | $8.11 | $148K | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | 908 DEVICES, INC. | 5,000 | $8.00 | $40K | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | 908 DEVICES, INC. | 57,365 | $8.06 | $462K | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | 908 DEVICES, INC. | 12,819 | $8.20 | $105K | |
| AWM Investment Company, Inc. - 10% Owner | Open-market sale | 908 DEVICES, INC. | 3,025 | $8.20 | $25K | |
| Christopher D. Brown | Open-market sale | Common Stock | 20,000 | $7.23 | $145K | |
| John Kenneweg - Officer | Option exercise | Common Stock | 26,042 | - | - | |
| John Kenneweg - Officer | Open-market sale | Common Stock | 7,787 | $6.83 | $53K | |
| John Kenneweg - Officer | Option exercise | Performance Stock Units | 26,042 | $0.00 | - | |
| John Kenneweg - Officer | Grant or award | Performance Stock Units | 26,042 | $0.00 | - | |
| Kolawole A. Otitoju - Officer | Grant or award | Stock Option (right to buy) | 146,789 | $0.00 | - | |
| Kolawole A. Otitoju - Officer | Grant or award | Restricted Stock Units | 110,193 | $0.00 | - | |
| Kevin J. McCallion - Officer | Option exercise | Common Stock | 2,693 | $1.05 | $3K | |
| Kevin J. McCallion - Officer | Open-market sale | Common Stock | 2,693 | $7.01 | $19K | |
| Kevin J. McCallion - Officer | Option exercise | Stock Option (right to buy) | 2,693 | $0.00 | - | |
| Kevin J. McCallion - Officer | Option exercise | Common Stock | 18,580 | $1.05 | $20K | |
| Kevin J. McCallion - Officer | Open-market sale | Common Stock | 18,580 | $7.05 | $131K | |
| Kevin J. McCallion - Officer | Option exercise | Common Stock | 5,420 | $1.05 | $6K | |
| Kevin J. McCallion - Officer | Open-market sale | Common Stock | 5,420 | $7.03 | $38K | |
| Kevin J. McCallion - Officer | Option exercise | Stock Option (right to buy) | 18,580 | $0.00 | - | |
| Kevin J. McCallion - Officer | Option exercise | Stock Option (right to buy) | 5,420 | $0.00 | - | |
| Christopher D. Brown | Open-market sale | Common Stock | 15,030 | $7.05 | $106K | |
| Christopher D. Brown | Open-market sale | Common Stock | 7,392 | $7.04 | $52K | |
| Christopher D. Brown | Open-market sale | Common Stock | 17,578 | $7.07 | $124K | |
| Kevin J. McCallion - Officer | Option exercise | Common Stock | 7 | $1.05 | $7 | |
| Kevin J. McCallion - Officer | Open-market sale | Common Stock | 7 | $7.00 | $49 | |
| Kevin J. McCallion - Officer | Option exercise | Stock Option (right to buy) | 7 | $0.00 | - | |
| Kevin J. McCallion - Officer | Open-market sale | Common Stock | 7 | $7.00 | $49 | |
| Christopher D. Brown | Option exercise | Common Stock | 5,027 | - | - | |
| Christopher D. Brown | Option exercise | Common Stock | 7,418 | - | - | |
| Christopher D. Brown | Option exercise | Common Stock | 10,992 | - | - | |
| Christopher D. Brown | Option exercise | Restricted Stock Units | 5,027 | $0.00 | - | |
| Christopher D. Brown | Option exercise | Restricted Stock Units | 7,418 | $0.00 | - | |
| Christopher D. Brown | Option exercise | Restricted Stock Units | 10,992 | $0.00 | - | |
| Kevin J. Knopp - Officer | Option exercise | Common Stock | 11,255 | - | - | |
| Kevin J. Knopp - Officer | Option exercise | Common Stock | 13,449 | - | - | |
| Kevin J. Knopp - Officer | Option exercise | Common Stock | 17,007 | - | - | |
| Kevin J. Knopp - Officer | Option exercise | Common Stock | 66,288 | - | - | |
| Kevin J. Knopp - Officer | Open-market sale | Common Stock | 34,764 | $6.18 | $215K | |
| Kevin J. Knopp - Officer | Option exercise | Restricted Stock Units | 11,255 | $0.00 | - | |
| Kevin J. Knopp - Officer | Option exercise | Restricted Stock Units | 13,449 | $0.00 | - | |
| Kevin J. Knopp - Officer | Option exercise | Restricted Stock Units | 17,007 | $0.00 | - | |
| Kevin J. Knopp - Officer | Option exercise | Restricted Stock Units | 66,288 | $0.00 | - | |
| Kevin J. Knopp - Officer | Grant or award | Restricted Stock Units | 205,978 | $0.00 | - | |
| Kevin J. Knopp - Officer | Grant or award | Stock Option (option to buy) | 90,043 | $0.00 | - | |
| Joseph H. Griffith IV - Officer | Option exercise | Common Stock | 5,102 | - | - | |
| Joseph H. Griffith IV - Officer | Option exercise | Common Stock | 10,306 | - | - | |
| Joseph H. Griffith IV - Officer | Option exercise | Common Stock | 11,260 | - | - | |
| Joseph H. Griffith IV - Officer | Option exercise | Common Stock | 43,473 | - | - | |
| Joseph H. Griffith IV - Officer | Open-market sale | Common Stock | 23,175 | $6.18 | $143K | |
| Joseph H. Griffith IV - Officer | Option exercise | Restricted Stock Units | 5,102 | $0.00 | - | |
| Joseph H. Griffith IV - Officer | Option exercise | Restricted Stock Units | 10,306 | $0.00 | - | |
| Joseph H. Griffith IV - Officer | Option exercise | Restricted Stock Units | 11,260 | $0.00 | - | |
| Joseph H. Griffith IV - Officer | Option exercise | Restricted Stock Units | 43,473 | $0.00 | - | |
| Joseph H. Griffith IV - Officer | Grant or award | Restricted Stock Units | 121,164 | $0.00 | - | |
| Joseph H. Griffith IV - Officer | Grant or award | Stock Option (option to buy) | 52,967 | $0.00 | - | |
| Mark Spoto | Other | Common Stock | 928 | $0.00 | - | |
| Mark Spoto | Gift | Common Stock | 928 | $0.00 | - | |
| Mark Spoto | Gift | Common Stock | 928 | $0.00 | - | |
| Joseph H. Griffith IV - Officer | Open-market sale | Common Stock | 708 | $9.04 | $6K | |
| Joseph H. Griffith IV - Officer | Open-market sale | Common Stock | 4,292 | $9.05 | $39K | |
| Joseph H. Griffith IV - Officer | Open-market sale | Common Stock | 5,000 | $7.07 | $35K | |
| Brandi C. Vann | Grant or award | Restricted Stock Unit | 15,577 | $0.00 | - | |
| Brandi C. Vann | Grant or award | Stock Option (option to buy) | 20,409 | $0.00 | - | |
| E. Kevin Hrusovsky | Option exercise | Common Stock | 11,364 | - | - | |
| E. Kevin Hrusovsky | Option exercise | Restricted Stock Units | 11,364 | $0.00 | - | |
| E. Kevin Hrusovsky | Grant or award | Restricted Stock Units | 14,083 | $0.00 | - | |
| E. Kevin Hrusovsky | Grant or award | Stock Option (option to buy) | 6,516 | $0.00 | - | |
| Keith Crandell | Option exercise | Common Stock | 11,364 | - | - | |
| Keith Crandell | Option exercise | Restricted Stock Units | 11,364 | $0.00 | - | |
| Keith Crandell | Grant or award | Restricted Stock Units | 14,083 | $0.00 | - | |
| Keith Crandell | Grant or award | Stock Option (option to buy) | 6,516 | $0.00 | - | |
| Fenel M. Eloi | Option exercise | Common Stock | 11,364 | - | - | |
| Fenel M. Eloi | Option exercise | Restricted Stock Units | 11,364 | $0.00 | - | |
| Fenel M. Eloi | Grant or award | Restricted Stock Units | 14,083 | $0.00 | - | |
| Fenel M. Eloi | Grant or award | Stock Option (option to buy) | 6,516 | $0.00 | - | |
| Christopher D. Brown - Officer | Option exercise | Common Stock | 55,131 | $1.58 | $87K | |
| Christopher D. Brown - Officer | Option exercise | Stock Option (Right to Buy) | 55,131 | $0.00 | - | |
| Kevin J. Knopp - Officer | Option exercise | Common Stock | 47,418 | $1.75 | $83K | |
| Kevin J. Knopp - Officer | Option exercise | Common Stock | 110,626 | $1.58 | $175K | |
| Kevin J. Knopp - Officer | Option exercise | Stock Option (Right to Buy) | 47,418 | $0.00 | - | |
| Kevin J. Knopp - Officer | Option exercise | Stock Option (Right to Buy) | 110,626 | $0.00 | - |
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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