MASS · 908 Devices Inc. Common Stock
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| AWM Investment Company, Inc. 10% Owner | ▼ Sell | Open Market | 4,779,773 Shares held | 8/21/2026 | View profile |
| Christopher D. Brown Chief Technology Officer | ▼ Sell | Open Market | 775,559 Shares held | 9/2/2026 | View profile |
| Kevin J. Knopp President and CEO | ▼ Sell | Open Market | 555,968 Shares held | 8/17/2026 | View profile |
| E. Kevin Hrusovsky Chairman and CEO | ▲ Buy | Option Exercise | 165,390 Shares held | 6/10/2026 | View profile |
| Joseph H. Griffith IV Chief Financial Officer | ▼ Sell | Open Market | 121,497 Shares held | 8/25/2026 | View profile |
| Mark Spoto | ▲ Buy | Option Exercise | 89,346 Shares held | 6/10/2026 | View profile |
| Basarsky Trent A. VP, Corporate Development | ▲ Buy | Option Exercise | 80,000 Shares held | 4/27/2022 | View profile |
| John Kenneweg Vice President, Government | ▼ Sell | Open Market | 57,784 Shares held | 9/17/2026 | View profile |
| Kevin J. McCallion SVP, Products and Production | ▼ Sell | Open Market | 44,925 Shares held | 4/10/2026 | View profile |
| Anthony Hunt Chief Executive Officer | ▲ Buy | Option Exercise | 44,168 Shares held | 6/10/2026 | View profile |
| Fenel M. Eloi Director | ▲ Buy | Option Exercise | 40,897 Shares held | 6/10/2026 | View profile |
| Keith Crandell Director | ▲ Buy | Option Exercise | 39,374 Shares held | 6/10/2026 | View profile |
| Michele M. Leonhart | ▲ Buy | Option Exercise | 27,054 Shares held | 6/25/2026 | View profile |
| Jeffrey P. George Director | ▲ Buy | Option Exercise | 26,814 Shares held | 6/11/2025 | View profile |
| Eisenberg Marcia | ▲ Buy | Option Exercise | 25,957 Shares held | 6/11/2025 | View profile |
| BARTHELEMY NICOLAS Director | ▲ Buy | Option Exercise | 15,379 Shares held | 6/15/2022 | View profile |
| Brandi C. Vann | ▲ Buy | Option Exercise | 5,192 Shares held | 8/1/2026 | View profile |
| Fitzpatrick Maura VP, Product Management & Mktg | ▼ Sell | Open Market | 2,834 Shares held | 2/1/2023 | View profile |
| Turner Michael S. VP, General Counsel | ▼ Sell | Open Market | 0 Shares held | 6/18/2025 | View profile |
Transaction History
| John Kenneweg | ▲ Buy | Option Exercise | 5,257 | $5K | 9/17/2026 |
| John Kenneweg | ▼ Sell | Open Market | 5,257 | $54K | 9/17/2026 |
| John Kenneweg | ▲ Buy | Option Exercise | 21,399 | $21K | 9/16/2026 |
| John Kenneweg | ▼ Sell | Open Market | 21,399 | $216K | 9/16/2026 |
| John Kenneweg | ▲ Buy | Option Exercise | 1,000 | $960 | 9/15/2026 |
| John Kenneweg | ▼ Sell | Open Market | 1,000 | $10K | 9/15/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 30,000 | $317K | 9/2/2026 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 11,459 | $125K | 8/25/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 41,578 | $441K | 8/21/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 8,422 | $89K | 8/20/2026 |
| Kevin J. Knopp | ▼ Sell | Open Market | 20,000 | $207K | 8/17/2026 |
| Kevin J. Knopp | ▼ Sell | Open Market | 7,622 | $77K | 8/13/2026 |
| Kevin J. Knopp | ▼ Sell | Open Market | 2,747 | $28K | 8/12/2026 |
| Kevin J. Knopp | ▼ Sell | Open Market | 115,748 | $1.1M | 8/11/2026 |
| Kevin J. Knopp | ▼ Sell | Open Market | 30,170 | $307K | 8/11/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 8,358 | $77K | 8/11/2026 |
| Kevin J. Knopp | ▼ Sell | Open Market | 348 | $3K | 8/10/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 9,442 | $85K | 8/10/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 20,000 | $170K | 8/5/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 50,000 | $418K | 8/4/2026 |
| Brandi C. Vann | ▲ Buy | Option Exercise | 5,192 | — | 8/1/2026 |
| Kevin J. Knopp | ▼ Sell | Open Market | 222 | $2K | 7/2/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 2,200 | $20K | 7/2/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 20,000 | $177K | 6/30/2026 |
| Kevin J. Knopp | ▼ Sell | Open Market | 2,798 | $25K | 6/26/2026 |
| Kevin J. Knopp | ▼ Sell | Open Market | 16,388 | $149K | 6/25/2026 |
| Michele M. Leonhart | ▲ Buy | Option Exercise | 6,486 | — | 6/25/2026 |
| Kevin J. Knopp | ▼ Sell | Open Market | 40,535 | $370K | 6/24/2026 |
| Kevin J. Knopp | ▼ Sell | Open Market | 3,422 | $31K | 6/23/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 3,050 | $27K | 6/23/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 9,900 | $89K | 6/23/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 4,668 | $42K | 6/22/2026 |
| Michele M. Leonhart | ▲ Buy | Option Exercise | 14,083 | — | 6/10/2026 |
| Anthony Hunt | ▲ Buy | Option Exercise | 14,083 | — | 6/10/2026 |
| Keith Crandell | ▲ Buy | Option Exercise | 14,083 | — | 6/10/2026 |
| Mark Spoto | ▲ Buy | Option Exercise | 14,083 | — | 6/10/2026 |
| Fenel M. Eloi | ▲ Buy | Option Exercise | 14,083 | — | 6/10/2026 |
| E. Kevin Hrusovsky | ▲ Buy | Option Exercise | 14,083 | — | 6/10/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 39,782 | $357K | 6/4/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 100 | $900 | 6/4/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 20,000 | $175K | 6/3/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 2,500 | $22K | 6/2/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 30,000 | $270K | 5/28/2026 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 6,940 | $63K | 5/28/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 170,442 | $1.5M | 5/28/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 1,500 | $12K | 5/27/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 15,000 | $124K | 5/27/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 5,000 | $41K | 5/11/2026 |
| John Kenneweg | ▼ Sell | Open Market | 18,255 | $148K | 5/8/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 3,025 | $25K | 5/8/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 12,819 | $105K | 5/7/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 5,000 | $40K | 5/6/2026 |
| AWM Investment Company, Inc. | ▼ Sell | Open Market | 57,365 | $462K | 5/6/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 20,000 | $145K | 5/6/2026 |
| John Kenneweg | ▲ Buy | Option Exercise | 26,042 | — | 5/1/2026 |
| John Kenneweg | ▼ Sell | Open Market | 7,787 | $53K | 5/1/2026 |
| Kevin J. McCallion | ▲ Buy | Option Exercise | 2,693 | $3K | 4/10/2026 |
| Kevin J. McCallion | ▼ Sell | Open Market | 2,693 | $19K | 4/10/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 17,578 | $124K | 4/10/2026 |
| Kevin J. McCallion | ▲ Buy | Option Exercise | 5,420 | $6K | 4/9/2026 |
| Kevin J. McCallion | ▼ Sell | Open Market | 5,420 | $38K | 4/9/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 7,392 | $52K | 4/9/2026 |
| Kevin J. McCallion | ▲ Buy | Option Exercise | 18,580 | $20K | 4/8/2026 |
| Kevin J. McCallion | ▼ Sell | Open Market | 18,580 | $131K | 4/8/2026 |
| Christopher D. Brown | ▼ Sell | Open Market | 15,030 | $106K | 4/8/2026 |
| Kevin J. McCallion | ▼ Sell | Open Market | 7 | $49 | 3/2/2026 |
| Kevin J. Knopp | ▼ Sell | Open Market | 34,764 | $215K | 2/2/2026 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 23,175 | $143K | 2/2/2026 |
| Christopher D. Brown | ▲ Buy | Option Exercise | 5,027 | — | 2/1/2026 |
| Christopher D. Brown | ▲ Buy | Option Exercise | 10,992 | — | 2/1/2026 |
| Kevin J. Knopp | ▲ Buy | Option Exercise | 11,255 | — | 2/1/2026 |
| Kevin J. Knopp | ▲ Buy | Option Exercise | 13,449 | — | 2/1/2026 |
| Kevin J. Knopp | ▲ Buy | Option Exercise | 17,007 | — | 2/1/2026 |
| Kevin J. Knopp | ▲ Buy | Option Exercise | 66,288 | — | 2/1/2026 |
| Joseph H. Griffith IV | ▲ Buy | Option Exercise | 10,306 | — | 2/1/2026 |
| Joseph H. Griffith IV | ▲ Buy | Option Exercise | 11,260 | — | 2/1/2026 |
| Joseph H. Griffith IV | ▲ Buy | Option Exercise | 43,473 | — | 2/1/2026 |
| Christopher D. Brown | ▲ Buy | Option Exercise | 7,418 | — | 2/1/2026 |
| Joseph H. Griffith IV | ▲ Buy | Option Exercise | 5,102 | — | 2/1/2026 |
| Mark Spoto | ▼ Sell | Gift | 928 | $0 | 12/30/2025 |
| Mark Spoto | ▼ Sell | Gift | 928 | $0 | 12/30/2025 |
| Mark Spoto | ▼ Sell | Other | 928 | $0 | 10/14/2025 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 4,292 | $39K | 10/3/2025 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 708 | $6K | 10/2/2025 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 5,000 | $35K | 9/19/2025 |
| Michele M. Leonhart | ▲ Buy | Option Exercise | 6,485 | — | 6/25/2025 |
| Turner Michael S. | ▼ Sell | Open Market | 1,373 | $10K | 6/18/2025 |
| Turner Michael S. | ▼ Sell | Open Market | 7,148 | $54K | 6/17/2025 |
| Turner Michael S. | ▼ Sell | Open Market | 16,082 | $121K | 6/16/2025 |
| Eisenberg Marcia | ▲ Buy | Option Exercise | 11,364 | — | 6/11/2025 |
| Mark Spoto | ▲ Buy | Option Exercise | 11,364 | — | 6/11/2025 |
| Keith Crandell | ▲ Buy | Option Exercise | 11,364 | — | 6/11/2025 |
| Anthony Hunt | ▲ Buy | Option Exercise | 11,364 | — | 6/11/2025 |
| Jeffrey P. George | ▲ Buy | Option Exercise | 11,364 | — | 6/11/2025 |
| Fenel M. Eloi | ▲ Buy | Option Exercise | 11,364 | — | 6/11/2025 |
| E. Kevin Hrusovsky | ▲ Buy | Option Exercise | 11,364 | — | 6/11/2025 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 6,940 | $49K | 6/4/2025 |
| Kevin J. Knopp | ▲ Buy | Open Market | 15,000 | $67K | 5/15/2025 |
| Mark Spoto | ▲ Buy | Open Market | 7,000 | $30K | 5/14/2025 |
| Mark Spoto | ▲ Buy | Open Market | 3,000 | $13K | 5/14/2025 |
| Kevin J. Knopp | ▲ Buy | Open Market | 15,000 | $65K | 5/14/2025 |
| Anthony Hunt | ▲ Buy | Option Exercise | 2,058 | — | 3/2/2025 |
| Turner Michael S. | ▼ Sell | Open Market | 3,807 | $9K | 2/3/2025 |
| Turner Michael S. | ▼ Sell | Open Market | 4,162 | $10K | 2/3/2025 |
| Turner Michael S. | ▼ Sell | Open Market | 1,703 | $4K | 2/3/2025 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 1,960 | $5K | 2/3/2025 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 3,955 | $9K | 2/3/2025 |
| Kevin J. Knopp | ▼ Sell | Open Market | 5,159 | $12K | 2/3/2025 |
| Kevin J. Knopp | ▼ Sell | Open Market | 6,524 | $15K | 2/3/2025 |
| Christopher D. Brown | ▼ Sell | Open Market | 1,667 | $4K | 2/3/2025 |
| Christopher D. Brown | ▼ Sell | Open Market | 2,459 | $6K | 2/3/2025 |
| Christopher D. Brown | ▼ Sell | Open Market | 3,641 | $9K | 2/3/2025 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 4,321 | $10K | 2/3/2025 |
| Kevin J. Knopp | ▼ Sell | Open Market | 4,318 | $10K | 2/3/2025 |
| Kevin J. Knopp | ▲ Buy | Option Exercise | 11,254 | — | 2/1/2025 |
| Joseph H. Griffith IV | ▲ Buy | Option Exercise | 5,102 | — | 2/1/2025 |
| Joseph H. Griffith IV | ▲ Buy | Option Exercise | 10,306 | — | 2/1/2025 |
| Joseph H. Griffith IV | ▲ Buy | Option Exercise | 11,261 | — | 2/1/2025 |
| Kevin J. Knopp | ▲ Buy | Option Exercise | 13,448 | — | 2/1/2025 |
| Christopher D. Brown | ▲ Buy | Option Exercise | 5,027 | — | 2/1/2025 |
| Christopher D. Brown | ▲ Buy | Option Exercise | 7,418 | — | 2/1/2025 |
| Kevin J. Knopp | ▲ Buy | Option Exercise | 17,007 | — | 2/1/2025 |
| Christopher D. Brown | ▲ Buy | Option Exercise | 10,991 | — | 2/1/2025 |
| Turner Michael S. | ▲ Buy | Option Exercise | 4,427 | — | 2/1/2025 |
| Turner Michael S. | ▲ Buy | Option Exercise | 9,909 | — | 2/1/2025 |
| Turner Michael S. | ▲ Buy | Option Exercise | 10,834 | — | 2/1/2025 |
| Christopher D. Brown | ▲ Buy | Option Exercise | 55,131 | $87K | 12/19/2024 |
| Kevin J. Knopp | ▲ Buy | Option Exercise | 110,626 | $175K | 12/13/2024 |
| Kevin J. Knopp | ▲ Buy | Option Exercise | 47,418 | $83K | 12/13/2024 |
| Christopher D. Brown | ▲ Buy | Option Exercise | 6,328 | $10K | 8/7/2024 |
| Eisenberg Marcia | ▲ Buy | Option Exercise | 7,777 | — | 6/12/2024 |
| E. Kevin Hrusovsky | ▲ Buy | Option Exercise | 7,777 | — | 6/12/2024 |
| Keith Crandell | ▲ Buy | Option Exercise | 7,777 | — | 6/12/2024 |
| Anthony Hunt | ▲ Buy | Option Exercise | 7,777 | — | 6/12/2024 |
| Mark Spoto | ▲ Buy | Option Exercise | 7,777 | — | 6/12/2024 |
| Jeffrey P. George | ▲ Buy | Option Exercise | 7,777 | — | 6/12/2024 |
| Fenel M. Eloi | ▲ Buy | Option Exercise | 7,777 | — | 6/12/2024 |
| Eisenberg Marcia | ▲ Buy | Option Exercise | 682 | $0 | 6/7/2024 |
| Kevin J. Knopp | ▲ Buy | Open Market | 10,000 | $64K | 5/13/2024 |
| Kevin J. Knopp | ▲ Buy | Open Market | 10,000 | $58K | 5/10/2024 |
| Kevin J. Knopp | ▲ Buy | Open Market | 10,000 | $58K | 5/9/2024 |
| Kevin J. Knopp | ▲ Buy | Open Market | 10,000 | $57K | 5/8/2024 |
| Kevin J. Knopp | ▲ Buy | Open Market | 10,000 | $56K | 5/7/2024 |
| Kevin J. Knopp | ▲ Buy | Option Exercise | 47,000 | $82K | 4/16/2024 |
| Christopher D. Brown | ▲ Buy | Option Exercise | 3,600 | $6K | 4/1/2024 |
| Joseph H. Griffith IV | ▲ Buy | Option Exercise | 8,437 | $13K | 3/26/2024 |
| Anthony Hunt | ▲ Buy | Option Exercise | 2,057 | — | 3/4/2024 |
| Fenel M. Eloi | ▲ Buy | Option Exercise | 508 | — | 2/22/2024 |
| Jeffrey P. George | ▲ Buy | Option Exercise | 508 | — | 2/22/2024 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 9,711 | $69K | 2/2/2024 |
| Joseph H. Griffith IV | ▲ Buy | Option Exercise | 5,103 | — | 2/1/2024 |
| Joseph H. Griffith IV | ▲ Buy | Option Exercise | 10,306 | — | 2/1/2024 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 1,888 | $13K | 2/1/2024 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 3,810 | $27K | 2/1/2024 |
| Turner Michael S. | ▲ Buy | Option Exercise | 9,910 | — | 2/1/2024 |
| Turner Michael S. | ▼ Sell | Open Market | 1,616 | $11K | 2/1/2024 |
| Turner Michael S. | ▼ Sell | Open Market | 3,616 | $25K | 2/1/2024 |
| Kevin J. Knopp | ▲ Buy | Option Exercise | 11,255 | — | 2/1/2024 |
| Kevin J. Knopp | ▲ Buy | Option Exercise | 13,449 | — | 2/1/2024 |
| Kevin J. Knopp | ▼ Sell | Open Market | 4,099 | $29K | 2/1/2024 |
| Kevin J. Knopp | ▼ Sell | Open Market | 4,972 | $35K | 2/1/2024 |
| Christopher D. Brown | ▲ Buy | Option Exercise | 7,418 | — | 2/1/2024 |
| Christopher D. Brown | ▼ Sell | Open Market | 1,599 | $11K | 2/1/2024 |
| Christopher D. Brown | ▼ Sell | Open Market | 2,358 | $17K | 2/1/2024 |
| Christopher D. Brown | ▲ Buy | Option Exercise | 5,028 | — | 2/1/2024 |
| Turner Michael S. | ▲ Buy | Option Exercise | 4,427 | — | 2/1/2024 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 6,000 | $72K | 12/28/2023 |
| Christopher D. Brown | ▼ Sell | Open Market | 7,370 | $67K | 12/21/2023 |
| Christopher D. Brown | ▼ Sell | Open Market | 5,235 | $48K | 12/20/2023 |
| Christopher D. Brown | ▼ Sell | Open Market | 1,305 | $12K | 12/19/2023 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 5,580 | $51K | 12/19/2023 |
| Christopher D. Brown | ▼ Sell | Open Market | 6,090 | $55K | 12/19/2023 |
| Eisenberg Marcia | ▲ Buy | Option Exercise | 4,771 | — | 6/14/2023 |
| Keith Crandell | ▲ Buy | Option Exercise | 4,771 | — | 6/14/2023 |
| Anthony Hunt | ▲ Buy | Option Exercise | 4,771 | — | 6/14/2023 |
| Mark Spoto | ▲ Buy | Option Exercise | 4,771 | — | 6/14/2023 |
| E. Kevin Hrusovsky | ▲ Buy | Option Exercise | 4,771 | — | 6/14/2023 |
| Fenel M. Eloi | ▲ Buy | Option Exercise | 4,771 | — | 6/14/2023 |
| Jeffrey P. George | ▲ Buy | Option Exercise | 4,771 | — | 6/14/2023 |
| Eisenberg Marcia | ▲ Buy | Option Exercise | 681 | — | 6/7/2023 |
| Christopher D. Brown | ▼ Sell | Open Market | 4,470 | $45K | 6/7/2023 |
| Kevin J. Knopp | ▲ Buy | Option Exercise | 28,500 | $50K | 6/5/2023 |
| Kevin J. Knopp | ▼ Sell | Open Market | 60,000 | $607K | 5/23/2023 |
| Christopher D. Brown | ▼ Sell | Open Market | 10,000 | $100K | 5/23/2023 |
| Joseph H. Griffith IV | ▲ Buy | Option Exercise | 5,000 | $8K | 3/22/2023 |
| Anthony Hunt | ▲ Buy | Option Exercise | 2,058 | — | 3/2/2023 |
| Fenel M. Eloi | ▲ Buy | Option Exercise | 507 | — | 2/22/2023 |
| Jeffrey P. George | ▲ Buy | Option Exercise | 507 | — | 2/22/2023 |
| Kevin J. Knopp | ▼ Sell | Open Market | 4,842 | $49K | 2/16/2023 |
| Kevin J. Knopp | ▼ Sell | Open Market | 15,158 | $156K | 2/15/2023 |
| Kevin J. Knopp | ▼ Sell | Open Market | 40,000 | $420K | 2/2/2023 |
| Turner Michael S. | ▼ Sell | Open Market | 2,848 | $29K | 2/2/2023 |
| Joseph H. Griffith IV | ▼ Sell | Open Market | 3,266 | $33K | 2/2/2023 |
| Christopher D. Brown | ▼ Sell | Open Market | 10,000 | $100K | 2/2/2023 |
| Turner Michael S. | ▼ Sell | Open Market | 1,579 | $14K | 2/1/2023 |
| Christopher D. Brown | ▲ Buy | Option Exercise | 5,027 | — | 2/1/2023 |
| Joseph H. Griffith IV | ▲ Buy | Option Exercise | 5,102 | — | 2/1/2023 |
| Turner Michael S. | ▲ Buy | Option Exercise | 4,427 | — | 2/1/2023 |
| Fitzpatrick Maura | ▲ Buy | Option Exercise | 4,427 | — | 2/1/2023 |
| Fitzpatrick Maura | ▼ Sell | Open Market | 1,593 | $15K | 2/1/2023 |