Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of 908 Devices Inc. (MASS) since 2020 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of 908 Devices Inc.. Table 2 shows the detailed insider transactions. This company's CIK number is 1555279.
Total stock buying since 2020: $16,025,659.
Total stock sales since 2020: $37,456,577.
Total stock option exercises since 2020: $1,480,267.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2026 | 0 | $0 | 540,054 | $4,344,565 | 254,312 | $28,027 |
| 2025 | 25,000 | $107,535 | 78,279 | $367,239 | 170,983 | $0 |
| 2024 | 50,000 | $293,399 | 33,669 | $236,529 | 403,630 | $462,127 |
| 2023 | 0 | $0 | 192,785 | $1,942,556 | 100,381 | $57,775 |
| 2022 | 12,925 | $124,725 | 804,735 | $14,023,754 | 224,707 | $441,789 |
| 2021 | 0 | $0 | 473,360 | $16,541,934 | 280,746 | $490,549 |
| 2020 | 775,000 | $15,500,000 | 0 | $0 | 0 | $0 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2026-06 | 0 | $0 | 62,282 | $553,819 | 0 | $0 |
| 2026-05 | 0 | $0 | 353,133 | $2,962,391 | 26,042 | $0 |
| 2026-04 | 0 | $0 | 66,693 | $470,244 | 26,693 | $28,027 |
| 2026-03 | 0 | $0 | 7 | $49 | 0 | $0 |
| 2026-02 | 0 | $0 | 57,939 | $358,062 | 201,577 | $0 |
| 2025-10 | 0 | $0 | 5,000 | $45,248 | 0 | $0 |
| 2025-09 | 0 | $0 | 5,000 | $35,340 | 0 | $0 |
| 2025-06 | 0 | $0 | 24,603 | $184,789 | 51,941 | $0 |
| 2025-05 | 25,000 | $107,535 | 0 | $0 | 0 | $0 |
| 2025-03 | 0 | $0 | 0 | $0 | 2,058 | $0 |
| 2025-02 | 0 | $0 | 43,676 | $101,862 | 116,984 | $0 |
| 2024-12 | 0 | $0 | 0 | $0 | 213,175 | $350,249 |
| 2024-08 | 0 | $0 | 0 | $0 | 6,328 | $9,998 |
| 2024-06 | 0 | $0 | 0 | $0 | 55,121 | $0 |
| 2024-05 | 50,000 | $293,399 | 0 | $0 | 0 | $0 |
| 2024-04 | 0 | $0 | 0 | $0 | 50,600 | $88,550 |
| 2024-03 | 0 | $0 | 0 | $0 | 10,494 | $13,330 |
| 2024-02 | 0 | $0 | 33,669 | $236,529 | 67,912 | $0 |
| 2023-12 | 0 | $0 | 31,580 | $305,144 | 0 | $0 |
| 2023-06 | 0 | $0 | 4,470 | $44,834 | 62,578 | $49,875 |
| 2023-05 | 0 | $0 | 70,000 | $707,400 | 0 | $0 |
| 2023-03 | 0 | $0 | 0 | $0 | 7,058 | $7,900 |
| 2023-02 | 0 | $0 | 86,735 | $885,178 | 30,745 | $0 |
| 2022-11 | 12,925 | $124,725 | 60,000 | $694,020 | 0 | $0 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2026-06-04 | Awm Investment Company, Inc. (10% Owner) | Sale | 39,782 | 8.97 | 356,844 |
| 2026-06-03 | Brown Christopher D. | Sale | 20,000 | 8.73 | 174,600 |
| 2026-06-02 | Awm Investment Company, Inc. (10% Owner) | Sale | 2,500 | 8.95 | 22,375 |
| 2026-05-28 | Brown Christopher D. | Sale | 30,000 | 9.00 | 270,000 |
| 2026-05-28 | Awm Investment Company, Inc. (10% Owner) | Sale | 170,442 | 8.66 | 1,475,857 |
| 2026-05-28 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 6,940 | 9.03 | 62,668 |
| 2026-05-27 | Awm Investment Company, Inc. (10% Owner) | Sale | 16,500 | 8.25 | 136,141 |
| 2026-05-11 | Awm Investment Company, Inc. (10% Owner) | Sale | 5,000 | 8.25 | 41,255 |
| 2026-05-08 | Kenneweg John (SVP, Sales & Product Marketing) | Sale | 18,255 | 8.11 | 148,048 |
| 2026-05-08 | Awm Investment Company, Inc. (10% Owner) | Sale | 3,025 | 8.20 | 24,804 |
| 2026-05-07 | Awm Investment Company, Inc. (10% Owner) | Sale | 12,819 | 8.20 | 105,167 |
| 2026-05-06 | Brown Christopher D. | Sale | 20,000 | 7.23 | 144,600 |
| 2026-05-06 | Awm Investment Company, Inc. (10% Owner) | Sale | 62,365 | 8.03 | 500,666 |
| 2026-05-01 | Kenneweg John (SVP, Sales & Product Marketing) | Sale | 7,787 | 6.83 | 53,185 |
| 2026-05-01 | Kenneweg John (SVP, Sales & Product Marketing) | Option Ex | 26,042 | .00 | 0 |
| 2026-04-10 | Mccallion Kevin J. (SVP, Products and Production) | Sale | 2,693 | 7.01 | 18,877 |
| 2026-04-10 | Mccallion Kevin J. (SVP, Products and Production) | Option Ex | 2,693 | 1.05 | 2,827 |
| 2026-04-10 | Brown Christopher D. | Sale | 17,578 | 7.07 | 124,276 |
| 2026-04-09 | Mccallion Kevin J. (SVP, Products and Production) | Sale | 5,420 | 7.03 | 38,102 |
| 2026-04-09 | Mccallion Kevin J. (SVP, Products and Production) | Option Ex | 5,420 | 1.05 | 5,691 |
| 2026-04-09 | Brown Christopher D. | Sale | 7,392 | 7.04 | 52,039 |
| 2026-04-08 | Mccallion Kevin J. (SVP, Products and Production) | Sale | 18,580 | 7.05 | 130,989 |
| 2026-04-08 | Mccallion Kevin J. (SVP, Products and Production) | Option Ex | 18,580 | 1.05 | 19,509 |
| 2026-04-08 | Brown Christopher D. | Sale | 15,030 | 7.05 | 105,961 |
| 2026-03-02 | Mccallion Kevin J. (SVP, Products and Production) | Sale | 7 | 7.00 | 49 |
| 2026-02-02 | Knopp Kevin J. (President and CEO) | Sale | 34,764 | 6.18 | 214,841 |
| 2026-02-02 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 23,175 | 6.18 | 143,221 |
| 2026-02-01 | Brown Christopher D. | Option Ex | 23,437 | .00 | 0 |
| 2026-02-01 | Knopp Kevin J. (President and CEO) | Option Ex | 107,999 | .00 | 0 |
| 2026-02-01 | Griffith Joseph H. Iv (Chief Financial Officer) | Option Ex | 70,141 | .00 | 0 |
| 2025-10-03 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 4,292 | 9.05 | 38,851 |
| 2025-10-02 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 708 | 9.04 | 6,397 |
| 2025-09-19 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 5,000 | 7.07 | 35,340 |
| 2025-06-25 | Leonhart Michele M. | Option Ex | 6,485 | .00 | 0 |
| 2025-06-18 | Turner Michael S. (Chief Legal & Admin Officer) | Sale | 1,373 | 7.50 | 10,297 |
| 2025-06-17 | Turner Michael S. (Chief Legal & Admin Officer) | Sale | 7,148 | 7.51 | 53,652 |
| 2025-06-16 | Turner Michael S. (Chief Legal & Admin Officer) | Sale | 16,082 | 7.51 | 120,840 |
| 2025-06-11 | George Jeffrey P. | Option Ex | 11,364 | .00 | 0 |
| 2025-06-11 | Hunt Anthony | Option Ex | 11,364 | .00 | 0 |
| 2025-06-11 | Hrusovsky E Kevin | Option Ex | 11,364 | .00 | 0 |
| 2025-06-11 | Eloi Fenel M | Option Ex | 11,364 | .00 | 0 |
| 2025-05-14 | Spoto Mark | Buy | 10,000 | 4.28 | 42,750 |
| 2025-05-14 | Knopp Kevin J. (President and CEO) | Buy | 15,000 | 4.32 | 64,785 |
| 2025-03-02 | Hunt Anthony | Option Ex | 2,058 | .00 | 0 |
| 2025-02-03 | Brown Christopher D. (Chief Product Officer) | Sale | 7,767 | 2.35 | 18,213 |
| 2025-02-03 | Turner Michael S. (Chief Legal & Admin Officer) | Sale | 9,672 | 2.33 | 22,555 |
| 2025-02-03 | Knopp Kevin J. (President and CEO) | Sale | 16,001 | 2.32 | 37,122 |
| 2025-02-03 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 10,236 | 2.34 | 23,972 |
| 2025-02-01 | Brown Christopher D. (Chief Product Officer) | Option Ex | 23,436 | .00 | 0 |
| 2025-02-01 | Turner Michael S. (Chief Legal & Admin Officer) | Option Ex | 25,170 | .00 | 0 |
| 2025-02-01 | Knopp Kevin J. (President and CEO) | Option Ex | 41,709 | .00 | 0 |
| 2025-02-01 | Griffith Joseph H. Iv (Chief Financial Officer) | Option Ex | 26,669 | .00 | 0 |
| 2024-12-19 | Brown Christopher D. (Chief Product Officer) | Option Ex | 55,131 | 1.58 | 87,106 |
| 2024-12-13 | Knopp Kevin J. (President and CEO) | Option Ex | 158,044 | 1.67 | 263,143 |
| 2024-08-07 | Brown Christopher D. (Chief Product Officer) | Option Ex | 6,328 | 1.58 | 9,998 |
| 2024-06-12 | Eisenberg Marcia | Option Ex | 7,777 | .00 | 0 |
| 2024-06-12 | Spoto Mark | Option Ex | 7,777 | .00 | 0 |
| 2024-06-12 | George Jeffrey P. | Option Ex | 7,777 | .00 | 0 |
| 2024-06-12 | Hunt Anthony | Option Ex | 7,777 | .00 | 0 |
| 2024-06-12 | Hrusovsky E Kevin | Option Ex | 7,777 | .00 | 0 |
| 2024-06-12 | Eloi Fenel M | Option Ex | 7,777 | .00 | 0 |
| 2024-06-12 | Crandell Keith | Option Ex | 7,777 | .00 | 0 |
| 2024-06-07 | Eisenberg Marcia | Option Ex | 682 | .00 | 0 |
| 2024-05-13 | Knopp Kevin J. (President and CEO) | Buy | 10,000 | 6.42 | 64,200 |
| 2024-05-10 | Knopp Kevin J. (President and CEO) | Buy | 10,000 | 5.77 | 57,699 |
| 2024-05-09 | Knopp Kevin J. (President and CEO) | Buy | 10,000 | 5.83 | 58,300 |
| 2024-05-08 | Knopp Kevin J. (President and CEO) | Buy | 10,000 | 5.72 | 57,200 |
| 2024-05-07 | Knopp Kevin J. (President and CEO) | Buy | 10,000 | 5.60 | 56,000 |
| 2024-04-16 | Knopp Kevin J. (President and CEO) | Option Ex | 47,000 | 1.75 | 82,250 |
| 2024-04-01 | Brown Christopher D. (Chief Product Officer) | Option Ex | 3,600 | 1.75 | 6,300 |
| 2024-03-26 | Griffith Joseph H. Iv (Chief Financial Officer) | Option Ex | 8,437 | 1.58 | 13,330 |
| 2024-03-04 | Hunt Anthony | Option Ex | 2,057 | .00 | 0 |
| 2024-02-22 | George Jeffrey P. | Option Ex | 508 | .00 | 0 |
| 2024-02-22 | Eloi Fenel M | Option Ex | 508 | .00 | 0 |
| 2024-02-02 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 9,711 | 7.09 | 68,870 |
| 2024-02-01 | Brown Christopher D. (Chief Product Officer) | Sale | 3,957 | 7.00 | 27,718 |
| 2024-02-01 | Brown Christopher D. (Chief Product Officer) | Option Ex | 12,446 | .00 | 0 |
| 2024-02-01 | Turner Michael S. (Chief Legal & Admin Officer) | Sale | 5,232 | 7.00 | 36,613 |
| 2024-02-01 | Turner Michael S. (Chief Legal & Admin Officer) | Option Ex | 14,337 | .00 | 0 |
| 2024-02-01 | Knopp Kevin J. (President and CEO) | Sale | 9,071 | 6.99 | 63,442 |
| 2024-02-01 | Knopp Kevin J. (President and CEO) | Option Ex | 24,704 | .00 | 0 |
| 2024-02-01 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 5,698 | 7.00 | 39,886 |
| 2024-02-01 | Griffith Joseph H. Iv (Chief Financial Officer) | Option Ex | 15,409 | .00 | 0 |
| 2023-12-28 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 6,000 | 12.08 | 72,480 |
| 2023-12-21 | Brown Christopher D. (Chief Product Officer) | Sale | 7,370 | 9.12 | 67,214 |
| 2023-12-20 | Brown Christopher D. (Chief Product Officer) | Sale | 5,235 | 9.10 | 47,638 |
| 2023-12-19 | Brown Christopher D. (Chief Product Officer) | Sale | 7,395 | 9.08 | 67,146 |
| 2023-12-19 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 5,580 | 9.08 | 50,666 |
| 2023-06-14 | Eisenberg Marcia | Option Ex | 4,771 | .00 | 0 |
| 2023-06-14 | Spoto Mark | Option Ex | 4,771 | .00 | 0 |
| 2023-06-14 | George Jeffrey P. | Option Ex | 4,771 | .00 | 0 |
| 2023-06-14 | Hunt Anthony | Option Ex | 4,771 | .00 | 0 |
| 2023-06-14 | Hrusovsky E Kevin | Option Ex | 4,771 | .00 | 0 |
| 2023-06-14 | Eloi Fenel M | Option Ex | 4,771 | .00 | 0 |
| 2023-06-14 | Crandell Keith | Option Ex | 4,771 | .00 | 0 |
| 2023-06-07 | Eisenberg Marcia | Option Ex | 681 | .00 | 0 |
| 2023-06-07 | Brown Christopher D. (Chief Product Officer) | Sale | 4,470 | 10.03 | 44,834 |
| 2023-06-05 | Knopp Kevin J. (President and CEO) | Option Ex | 28,500 | 1.75 | 49,875 |
| 2023-05-23 | Brown Christopher D. (Chief Technology Officer) | Sale | 10,000 | 10.02 | 100,200 |
| 2023-05-23 | Knopp Kevin J. (President and CEO) | Sale | 60,000 | 10.12 | 607,200 |
| 2023-03-22 | Griffith Joseph H. Iv (Chief Financial Officer) | Option Ex | 5,000 | 1.58 | 7,900 |
| 2023-03-02 | Hunt Anthony | Option Ex | 2,058 | .00 | 0 |
| 2023-02-22 | Eloi Fenel M | Option Ex | 507 | .00 | 0 |
| 2023-02-16 | Knopp Kevin J. (President and CEO) | Sale | 4,842 | 10.12 | 49,001 |
| 2023-02-15 | Knopp Kevin J. (President and CEO) | Sale | 15,158 | 10.29 | 155,975 |
| 2023-02-02 | Brown Christopher D. (Chief Technology Officer) | Sale | 10,000 | 10.03 | 100,300 |
| 2023-02-02 | Turner Michael S. (VP, General Counsel) | Sale | 2,848 | 10.02 | 28,536 |
| 2023-02-02 | Knopp Kevin J. (President and CEO) | Sale | 40,000 | 10.51 | 420,400 |
| 2023-02-02 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 3,266 | 10.03 | 32,757 |
| 2023-02-01 | Fitzpatrick Maura (VP, Product Management & Mktg) | Sale | 1,593 | 9.20 | 14,655 |
| 2023-02-01 | Fitzpatrick Maura (VP, Product Management & Mktg) | Option Ex | 4,427 | .00 | 0 |
| 2023-02-01 | Brown Christopher D. (Chief Technology Officer) | Sale | 1,564 | 9.17 | 14,341 |
| 2023-02-01 | Brown Christopher D. (Chief Technology Officer) | Option Ex | 5,027 | .00 | 0 |
| 2023-02-01 | Turner Michael S. (VP, General Counsel) | Sale | 1,579 | 9.17 | 14,479 |
| 2023-02-01 | Turner Michael S. (VP, General Counsel) | Option Ex | 4,427 | .00 | 0 |
| 2023-02-01 | Knopp Kevin J. (President and CEO) | Sale | 4,049 | 9.36 | 37,898 |
| 2023-02-01 | Knopp Kevin J. (President and CEO) | Option Ex | 11,255 | .00 | 0 |
| 2023-02-01 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 1,836 | 9.17 | 16,836 |
| 2023-02-01 | Griffith Joseph H. Iv (Chief Financial Officer) | Option Ex | 5,102 | .00 | 0 |
| 2022-11-22 | Spoto Mark | Buy | 7,755 | 9.65 | 74,835 |
| 2022-11-15 | Knopp Kevin J. (President and CEO) | Sale | 40,000 | 11.57 | 462,680 |
| 2022-10-18 | Knopp Kevin J. (President and CEO) | Sale | 37,600 | 15.32 | 576,032 |
| 2022-10-17 | Knopp Kevin J. (President and CEO) | Sale | 22,400 | 14.68 | 328,832 |
| 2022-09-15 | Knopp Kevin J. (President and CEO) | Sale | 150,000 | 16.94 | 2,541,000 |
| 2022-08-17 | Turner Michael S. (VP, General Counsel) | Sale | 5,000 | 18.15 | 90,750 |
| 2022-08-17 | Turner Michael S. (VP, General Counsel) | Option Ex | 5,000 | 7.91 | 39,550 |
| 2022-08-15 | Knopp Kevin J. (President and CEO) | Sale | 30,000 | 19.48 | 584,250 |
| 2022-08-04 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 12,733 | 24.39 | 310,557 |
| 2022-08-04 | Griffith Joseph H. Iv (Chief Financial Officer) | Option Ex | 12,733 | .96 | 12,223 |
| 2022-08-03 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 600 | 24.29 | 14,574 |
| 2022-08-03 | Griffith Joseph H. Iv (Chief Financial Officer) | Option Ex | 600 | .96 | 576 |
| 2022-08-02 | Turner Michael S. (VP, General Counsel) | Sale | 10,000 | 23.96 | 239,600 |
| 2022-08-02 | Turner Michael S. (VP, General Counsel) | Option Ex | 10,000 | 7.91 | 79,100 |
| 2022-08-01 | Knopp Kevin J. (President and CEO) | Sale | 14,647 | 22.46 | 328,971 |
| 2022-07-29 | Knopp Kevin J. (President and CEO) | Sale | 18,000 | 22.22 | 399,960 |
| 2022-07-28 | Knopp Kevin J. (President and CEO) | Sale | 5,700 | 22.01 | 125,457 |
| 2022-07-21 | Knopp Kevin J. (President and CEO) | Sale | 200 | 22.04 | 4,408 |
| 2022-07-15 | Knopp Kevin J. (President and CEO) | Sale | 30,000 | 17.27 | 518,100 |
| 2022-07-08 | Knopp Kevin J. (President and CEO) | Sale | 453 | 22.06 | 9,993 |
| 2022-07-06 | Brown Christopher D. (Chief Technology Officer) | Sale | 10,000 | 21.41 | 214,100 |
| 2022-07-06 | Knopp Kevin J. (President and CEO) | Sale | 1,000 | 22.07 | 22,070 |
| 2022-06-30 | Brown Christopher D. (Chief Technology Officer) | Sale | 3,700 | 20.12 | 74,444 |
| 2022-06-29 | Brown Christopher D. (Chief Technology Officer) | Sale | 16,471 | 20.22 | 333,043 |
| 2022-06-29 | Turner Michael S. (VP, General Counsel) | Sale | 5,000 | 20.03 | 100,150 |
| 2022-06-27 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 5,059 | 19.08 | 96,525 |
| 2022-06-27 | Griffith Joseph H. Iv (Chief Financial Officer) | Option Ex | 5,059 | .96 | 4,856 |
| 2022-06-24 | Griffith Joseph H. Iv (Chief Financial Officer) | Sale | 13,129 | 19.13 | 251,157 |
| 2022-06-24 | Griffith Joseph H. Iv (Chief Financial Officer) | Option Ex | 13,129 | .96 | 12,603 |
| 2022-06-23 | Turner Michael S. (VP, General Counsel) | Sale | 10,000 | 17.90 | 179,000 |
| 2022-06-23 | Turner Michael S. (VP, General Counsel) | Option Ex | 10,000 | 7.91 | 79,100 |
Insider trading activities including stock purchases, stock sales, and option exercises of MASS listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of 908 Devices Inc. (symbol MASS, CIK number 1555279) see the Securities and Exchange Commission (SEC) website.