908 Devices Inc. (MASS) · Insider trading
What 908 Devices's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$9.96M
6 insiders, 52% under a plan
Net, 12 months
−$9.96M
bought less sold
Latest filing
2026-10-09
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Awm Investment Company, Inc.10% owner | – | $4.17M | 18 | 2026-09-29 | – |
| Knopp Kevin J.Director, President and CEO | $131,400 | $2.59M | 17 | 2026-08-17 | 555,968 |
| Brown Christopher D.Director | – | $2.18M | 18 | 2026-10-07 | 745,559 |
| Griffith Joseph H. IVChief Financial Officer | – | $550,239 | 11 | 2026-10-06 | 116,497 |
| Kenneweg JohnSVP, Sales & Product Marketing | – | $481,304 | 5 | 2026-09-17 | 57,784 |
| Turner Michael S.Chief Legal & Admin Officer | – | $207,262 | 6 | 2025-06-18 | 0 |
| McCallion Kevin J.SVP, Products and Production | – | $188,019 | 4 | 2026-04-10 | 44,925 |
| Spoto MarkDirector | $42,850 | – | 2 | 2025-05-14 | 59,971 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-10-07 | Brown Christopher D.Director | Saleplan | 30,000 | 11.89 | $356,700 | 745,559 | Form 4 |
| 2026-10-06 | Griffith Joseph H. IVChief Financial Officer | Saleplan | 5,000 | 13.03 | $65,150 | 116,497 | Form 4 |
| 2026-09-29 | Awm Investment Company, Inc.10% owner | Saleindirect | 18,000 | 11.52 | $207,322 | 4,736,773 | Form 4 |
| 2026-09-24 | Awm Investment Company, Inc.10% owner | Saleindirect | 24,000 | 11.36 | $272,640 | 4,754,773 | Form 4 |
| 2026-09-23 | Awm Investment Company, Inc.10% owner | Saleindirect | 1,000 | 11.25 | $11,250 | 4,755,773 | Form 4 |
| 2026-09-17 | Kenneweg JohnSVP, Sales & Product Marketing | Saleplan | 5,257 | 10.22 | $53,727 | 57,784 | Form 4 |
| 2026-09-16 | Kenneweg JohnSVP, Sales & Product Marketing | Saleplan | 21,399 | 10.11 | $216,344 | 57,784 | Form 4 |
| 2026-09-15 | Kenneweg JohnSVP, Sales & Product Marketing | Saleplan | 1,000 | 10.00 | $10,000 | 57,784 | Form 4 |
| 2026-09-02 | Brown Christopher D.Director | Saleplan | 30,000 | 10.58 | $317,400 | 775,559 | Form 4 |
| 2026-08-25 | Griffith Joseph H. IVChief Financial Officer | Saleplan | 11,459 | 10.95 | $125,476 | 121,497 | Form 4 |
| 2026-08-21 | Awm Investment Company, Inc.10% owner | Saleindirect | 41,578 | 10.61 | $441,143 | 4,779,773 | Form 4 |
| 2026-08-20 | Awm Investment Company, Inc.10% owner | Saleindirect | 8,422 | 10.52 | $88,599 | 4,821,351 | Form 4 |
| 2026-08-17 | Knopp Kevin J.Director, President and CEO | Saleplan | 20,000 | 10.35 | $207,000 | 555,968 | Form 4 |
| 2026-08-13 | Knopp Kevin J.Director, President and CEO | Saleplan | 7,622 | 10.06 | $76,677 | 575,968 | Form 4 |
| 2026-08-12 | Knopp Kevin J.Director, President and CEO | Saleplan | 2,747 | 10.07 | $27,662 | 583,590 | Form 4 |
| 2026-08-11 | Knopp Kevin J.Director, President and CEO | Saleplan | 115,748 | 9.83 | $1.14M | 616,507 | Form 4 |
| 2026-08-11 | Knopp Kevin J.Director, President and CEO | Saleplan | 30,170 | 10.16 | $306,527 | 586,337 | Form 4 |
| 2026-08-11 | Brown Christopher D.Director | Saleplan | 8,358 | 9.23 | $77,144 | 805,559 | Form 4 |
| 2026-08-10 | Knopp Kevin J.Director, President and CEO | Saleplan | 348 | 9.06 | $3,153 | 732,255 | Form 4 |
| 2026-08-10 | Brown Christopher D.Director | Saleplan | 9,442 | 9.03 | $85,261 | 813,917 | Form 4 |
| 2026-08-05 | Brown Christopher D.Director | Saleplan | 20,000 | 8.49 | $169,800 | 823,359 | Form 4 |
| 2026-08-04 | Awm Investment Company, Inc.10% owner | Saleindirect | 50,000 | 8.36 | $418,000 | 4,829,773 | Form 4 |
| 2026-07-02 | Knopp Kevin J.Director, President and CEO | Saleplan | 222 | 9.07 | $2,014 | 732,603 | Form 4 |
| 2026-07-02 | Brown Christopher D.Director | Saleplan | 2,200 | 9.02 | $19,844 | 843,359 | Form 4 |
| 2026-06-30 | Brown Christopher D.Director | Saleplan | 20,000 | 8.84 | $176,800 | 845,559 | Form 4 |
| 2026-06-26 | Knopp Kevin J.Director, President and CEO | Saleplan | 2,798 | 9.09 | $25,434 | 732,825 | Form 4 |
| 2026-06-25 | Knopp Kevin J.Director, President and CEO | Saleplan | 16,388 | 9.10 | $149,131 | 735,623 | Form 4 |
| 2026-06-24 | Knopp Kevin J.Director, President and CEO | Saleplan | 40,535 | 9.14 | $370,490 | 752,011 | Form 4 |
| 2026-06-23 | Knopp Kevin J.Director, President and CEO | Saleplan | 3,422 | 9.06 | $31,003 | 792,546 | Form 4 |
| 2026-06-23 | Brown Christopher D.Director | Saleplan | 9,900 | 9.04 | $89,496 | 865,559 | Form 4 |
| 2026-06-23 | Awm Investment Company, Inc.10% owner | Saleindirect | 3,050 | 9.00 | $27,450 | 4,879,773 | Form 4 |
| 2026-06-22 | Awm Investment Company, Inc.10% owner | Saleindirect | 4,668 | 8.99 | $41,965 | 4,882,823 | Form 4 |
| 2026-06-04 | Brown Christopher D.Director | Saleplan | 100 | 9.00 | $900 | 875,459 | Form 4 |
| 2026-06-04 | Awm Investment Company, Inc.10% owner | Saleindirect | 39,782 | 8.97 | $356,845 | 4,887,491 | Form 4 |
| 2026-06-03 | Brown Christopher D.Director | Saleplan | 20,000 | 8.73 | $174,600 | 875,559 | Form 4 |
| 2026-06-02 | Awm Investment Company, Inc.10% owner | Saleindirect | 2,500 | 8.95 | $22,375 | 4,927,273 | Form 4 |
| 2026-05-28 | Griffith Joseph H. IVChief Financial Officer | Saleplan | 6,940 | 9.03 | $62,668 | 132,956 | Form 4 |
| 2026-05-28 | Awm Investment Company, Inc.10% owner | Saleindirect | 170,442 | 8.66 | $1.48M | 4,929,773 | Form 4 |
| 2026-05-28 | Brown Christopher D.Director | Saleplan | 30,000 | 9.00 | $270,000 | 895,559 | Form 4 |
| 2026-05-27 | Awm Investment Company, Inc.10% owner | Saleindirect | 1,500 | 8.25 | $12,375 | 5,115,215 | Form 4 |
41 more
| 2026-05-27 | Awm Investment Company, Inc.10% owner | Saleindirect | 15,000 | 8.25 | $123,750 | 5,100,215 | Form 4 |
| 2026-05-11 | Awm Investment Company, Inc.10% owner | Saleindirect | 5,000 | 8.25 | $41,250 | 5,116,715 | Form 4 |
| 2026-05-08 | Kenneweg JohnSVP, Sales & Product Marketing | Sale | 18,255 | 8.11 | $148,048 | 57,784 | Form 4 |
| 2026-05-08 | Awm Investment Company, Inc.10% owner | Saleindirect | 3,025 | 8.20 | $24,805 | 5,121,715 | Form 4 |
| 2026-05-07 | Awm Investment Company, Inc.10% owner | Saleindirect | 12,819 | 8.20 | $105,116 | 5,124,740 | Form 4 |
| 2026-05-06 | Awm Investment Company, Inc.10% owner | Saleindirect | 5,000 | 8.00 | $40,000 | 5,194,924 | Form 4 |
| 2026-05-06 | Awm Investment Company, Inc.10% owner | Saleindirect | 57,365 | 8.06 | $462,362 | 5,137,559 | Form 4 |
| 2026-05-06 | Brown Christopher D.Director | Saleplan | 20,000 | 7.23 | $144,600 | 925,559 | Form 4 |
| 2026-05-01 | Kenneweg JohnSVP, Sales & Product Marketing | Sale | 7,787 | 6.83 | $53,185 | 76,039 | Form 4 |
| 2026-04-10 | McCallion Kevin J.SVP, Products and Production | Saleplan | 2,693 | 7.01 | $18,878 | 44,925 | Form 4 |
| 2026-04-10 | Brown Christopher D.Director | Saleplan | 17,578 | 7.07 | $124,276 | 945,559 | Form 4 |
| 2026-04-09 | Brown Christopher D.Director | Saleplan | 7,392 | 7.04 | $52,040 | 963,137 | Form 4 |
| 2026-04-09 | McCallion Kevin J.SVP, Products and Production | Saleplan | 5,420 | 7.03 | $38,103 | 44,925 | Form 4 |
| 2026-04-08 | Brown Christopher D.Director | Saleplan | 15,030 | 7.05 | $105,962 | 970,529 | Form 4 |
| 2026-04-08 | McCallion Kevin J.SVP, Products and Production | Saleplan | 18,580 | 7.05 | $130,989 | 44,925 | Form 4 |
| 2026-03-02 | McCallion Kevin J.SVP, Products and Production | Saleplan | 7 | 7.00 | $49 | 44,925 | Form 4/A |
| 2026-02-02 | Griffith Joseph H. IVChief Financial Officer | Sale | 23,175 | 6.18 | $143,222 | 139,896 | Form 4 |
| 2026-02-02 | Knopp Kevin J.Director, President and CEO | Sale | 34,764 | 6.18 | $214,842 | 795,968 | Form 4 |
| 2025-10-03 | Griffith Joseph H. IVChief Financial Officer | Saleplan | 4,292 | 9.05 | $38,843 | 92,930 | Form 4 |
| 2025-10-02 | Griffith Joseph H. IVChief Financial Officer | Saleplan | 708 | 9.04 | $6,400 | 97,222 | Form 4 |
| 2025-09-19 | Griffith Joseph H. IVChief Financial Officer | Saleplan | 5,000 | 7.07 | $35,350 | 97,930 | Form 4 |
| 2025-06-18 | Turner Michael S.Chief Legal & Admin Officer | Sale | 1,373 | 7.50 | $10,298 | 0 | Form 4 |
| 2025-06-17 | Turner Michael S.Chief Legal & Admin Officer | Sale | 7,148 | 7.51 | $53,681 | 1,373 | Form 4 |
| 2025-06-16 | Turner Michael S.Chief Legal & Admin Officer | Sale | 16,082 | 7.51 | $120,776 | 8,521 | Form 4 |
| 2025-06-04 | Griffith Joseph H. IVChief Financial Officer | Sale | 6,940 | 7.08 | $49,135 | 102,930 | Form 4 |
| 2025-05-15 | Knopp Kevin J.Director, President and CEO | Buy | 15,000 | 4.44 | $66,600 | 722,733 | Form 4 |
| 2025-05-14 | Spoto MarkDirector | Buy | 7,000 | 4.30 | $30,100 | 59,971 | Form 4 |
| 2025-05-14 | Spoto MarkDirector | Buy | 3,000 | 4.25 | $12,750 | 62,971 | Form 4 |
| 2025-05-14 | Knopp Kevin J.Director, President and CEO | Buy | 15,000 | 4.32 | $64,800 | 707,733 | Form 4 |
| 2025-02-03 | Brown Christopher D.Chief Product Officer | Sale | 1,667 | 2.36 | $3,934 | 968,222 | Form 4 |
| 2025-02-03 | Brown Christopher D.Chief Product Officer | Sale | 2,459 | 2.34 | $5,754 | 965,763 | Form 4 |
| 2025-02-03 | Brown Christopher D.Chief Product Officer | Sale | 3,641 | 2.33 | $8,484 | 962,122 | Form 4 |
| 2025-02-03 | Knopp Kevin J.Director, President and CEO | Sale | 4,318 | 2.33 | $10,061 | 704,416 | Form 4 |
| 2025-02-03 | Knopp Kevin J.Director, President and CEO | Sale | 5,159 | 2.31 | $11,917 | 699,257 | Form 4 |
| 2025-02-03 | Knopp Kevin J.Director, President and CEO | Sale | 6,524 | 2.32 | $15,136 | 692,733 | Form 4 |
| 2025-02-03 | Turner Michael S.Chief Legal & Admin Officer | Sale | 1,703 | 2.36 | $4,019 | 32,572 | Form 4 |
| 2025-02-03 | Turner Michael S.Chief Legal & Admin Officer | Sale | 3,807 | 2.32 | $8,832 | 28,765 | Form 4 |
| 2025-02-03 | Turner Michael S.Chief Legal & Admin Officer | Sale | 4,162 | 2.32 | $9,656 | 24,603 | Form 4 |
| 2025-02-03 | Griffith Joseph H. IVChief Financial Officer | Sale | 1,960 | 2.34 | $4,586 | 118,146 | Form 4 |
| 2025-02-03 | Griffith Joseph H. IVChief Financial Officer | Sale | 3,955 | 2.34 | $9,255 | 114,191 | Form 4 |
| 2025-02-03 | Griffith Joseph H. IVChief Financial Officer | Sale | 4,321 | 2.35 | $10,154 | 109,870 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
52 × option exercise2 × gift1 × inherited
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-10-07 | Brown Christopher D.Director | Option exercise M | +60,000 | 1.75 | 805,559 | Form 4 |
| 2026-09-17 | Kenneweg JohnSVP, Sales & Product Marketing | Option exercise M | +5,257 | 0.96 | 63,041 | Form 4 |
| 2026-09-16 | Kenneweg JohnSVP, Sales & Product Marketing | Option exercise M | +21,399 | 0.96 | 79,183 | Form 4 |
| 2026-09-15 | Kenneweg JohnSVP, Sales & Product Marketing | Option exercise M | +1,000 | 0.96 | 58,784 | Form 4 |
| 2026-08-01 | Vann Brandi CDirector | Option exercise M | +5,192 | – | 5,192 | Form 4 |
| 2026-06-25 | Leonhart Michele M.Director | Option exercise M | +6,486 | – | 27,054 | Form 4 |
| 2026-06-10 | Crandell KeithDirector | Option exercise M | +14,083 | – | 39,374 | Form 4 |
| 2026-06-10 | Eloi Fenel MDirector | Option exercise M | +14,083 | – | 40,897 | Form 4 |
| 2026-06-10 | Hrusovsky e KevinDirector | Option exercise M | +14,083 | – | 165,390 | Form 4 |
| 2026-06-10 | Hunt AnthonyDirector | Option exercise M | +14,083 | – | 44,168 | Form 4 |
| 2026-06-10 | Spoto MarkDirector | Option exercise M | +14,083 | – | 89,346 | Form 4 |
| 2026-06-10 | Leonhart Michele M.Director | Option exercise M | +14,083 | – | 20,568 | Form 4 |
| 2026-05-01 | Kenneweg JohnSVP, Sales & Product Marketing | Option exercise M | +26,042 | – | 83,826 | Form 4 |
| 2026-04-10 | McCallion Kevin J.SVP, Products and Production | Option exercise M | +2,693 | 1.05 | 47,618 | Form 4 |
| 2026-04-09 | McCallion Kevin J.SVP, Products and Production | Option exercise M | +5,420 | 1.05 | 50,345 | Form 4 |
| 2026-04-08 | McCallion Kevin J.SVP, Products and Production | Option exercise M | +18,580 | 1.05 | 63,505 | Form 4 |
| 2026-03-02 | McCallion Kevin J.SVP, Products and Production | Option exercise M | +7 | 1.05 | 44,932 | Form 4/A |
| 2026-02-01 | Griffith Joseph H. IVChief Financial Officer | Option exercise M | +5,102 | – | 98,032 | Form 4 |
| 2026-02-01 | Griffith Joseph H. IVChief Financial Officer | Option exercise M | +10,306 | – | 108,338 | Form 4 |
| 2026-02-01 | Griffith Joseph H. IVChief Financial Officer | Option exercise M | +11,260 | – | 119,598 | Form 4 |
| 2026-02-01 | Griffith Joseph H. IVChief Financial Officer | Option exercise M | +43,473 | – | 163,071 | Form 4 |
| 2026-02-01 | Knopp Kevin J.Director, President and CEO | Option exercise M | +11,255 | – | 733,988 | Form 4 |
| 2026-02-01 | Knopp Kevin J.Director, President and CEO | Option exercise M | +13,449 | – | 747,437 | Form 4 |
| 2026-02-01 | Knopp Kevin J.Director, President and CEO | Option exercise M | +17,007 | – | 764,444 | Form 4 |
| 2026-02-01 | Knopp Kevin J.Director, President and CEO | Option exercise M | +66,288 | – | 830,732 | Form 4 |
| 2026-02-01 | Brown Christopher D.Director | Option exercise M | +5,027 | – | 967,149 | Form 4 |
| 2026-02-01 | Brown Christopher D.Director | Option exercise M | +7,418 | – | 974,567 | Form 4 |
| 2026-02-01 | Brown Christopher D.Director | Option exercise M | +10,992 | – | 985,559 | Form 4 |
| 2025-12-30 | Spoto MarkDirector | Gift G | −928 | – | 0 | Form 4 |
| 2025-12-30 | Spoto MarkDirector | Gift G | +928 | – | 75,263 | Form 4 |
| 2025-10-14 | Spoto MarkDirector | Inherited W | +928 | – | 928 | Form 4 |
| 2025-06-25 | Leonhart Michele M.Director | Option exercise M | +6,485 | – | 6,485 | Form 4 |
| 2025-06-11 | Spoto MarkDirector | Option exercise M | +11,364 | – | 74,335 | Form 4 |
| 2025-06-11 | Crandell KeithDirector, 10% owner | Option exercise M | +11,364 | – | 25,291 | Form 4 |
| 2025-06-11 | Eisenberg MarciaDirector | Option exercise M | +11,364 | – | 25,957 | Form 4 |
| 2025-06-11 | Eloi Fenel MDirector | Option exercise M | +11,364 | – | 26,814 | Form 4 |
| 2025-06-11 | George Jeffrey P.Director | Option exercise M | +11,364 | – | 26,814 | Form 4 |
| 2025-06-11 | Hunt AnthonyDirector | Option exercise M | +11,364 | – | 30,085 | Form 4 |
| 2025-06-11 | Hrusovsky e KevinDirector | Option exercise M | +11,364 | – | 151,307 | Form 4 |
| 2025-03-02 | Hunt AnthonyDirector | Option exercise M | +2,058 | – | 18,721 | Form 4 |
| 2025-02-01 | Brown Christopher D.Chief Product Officer | Option exercise M | +5,027 | – | 951,480 | Form 4 |
| 2025-02-01 | Brown Christopher D.Chief Product Officer | Option exercise M | +7,418 | – | 958,898 | Form 4 |
| 2025-02-01 | Brown Christopher D.Chief Product Officer | Option exercise M | +10,991 | – | 969,889 | Form 4 |
| 2025-02-01 | Knopp Kevin J.Director, President and CEO | Option exercise M | +11,254 | – | 678,279 | Form 4 |
| 2025-02-01 | Knopp Kevin J.Director, President and CEO | Option exercise M | +13,448 | – | 691,727 | Form 4 |
| 2025-02-01 | Knopp Kevin J.Director, President and CEO | Option exercise M | +17,007 | – | 708,734 | Form 4 |
| 2025-02-01 | Turner Michael S.Chief Legal & Admin Officer | Option exercise M | +4,427 | – | 13,532 | Form 4 |
| 2025-02-01 | Turner Michael S.Chief Legal & Admin Officer | Option exercise M | +9,909 | – | 23,441 | Form 4 |
| 2025-02-01 | Turner Michael S.Chief Legal & Admin Officer | Option exercise M | +10,834 | – | 34,275 | Form 4 |
| 2025-02-01 | Griffith Joseph H. IVChief Financial Officer | Option exercise M | +5,102 | – | 98,539 | Form 4 |
| 2025-02-01 | Griffith Joseph H. IVChief Financial Officer | Option exercise M | +10,306 | – | 108,845 | Form 4 |
| 2025-02-01 | Griffith Joseph H. IVChief Financial Officer | Option exercise M | +11,261 | – | 120,106 | Form 4 |
| 2024-12-19 | Brown Christopher D.Chief Product Officer | Option exercise M | +55,131 | 1.58 | 946,453 | Form 4 |
| 2024-12-13 | Knopp Kevin J.Director, President and CEO | Option exercise M | +47,418 | 1.75 | 556,399 | Form 4 |
| 2024-12-13 | Knopp Kevin J.Director, President and CEO | Option exercise M | +110,626 | 1.58 | 667,025 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.