908 DEVICES INC (MASS) — insider trading
Information Technology · NASDAQ
908 DEVICES INC (MASS) has 92 reported SEC Form 4 insider transactions in our data, including 49 open-market sales among the most recent 92 (latest 2026-10-06).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-10-06 | Griffith Joseph H. IV | Officer (Chief Financial Officer) | Open-market sale | 5,000 | $13.03 | $65.2K | Form 4 |
| 2026-09-29 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 18,000 | $11.52 | $207.3K | Form 4 |
| 2026-09-24 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 24,000 | $11.36 | $272.6K | Form 4 |
| 2026-09-23 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 1,000 | $11.25 | $11.3K | Form 4 |
| 2026-09-17 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Option exercise / conversion (derivative) | 5,257 | — | $0 | Form 4 |
| 2026-09-17 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Open-market sale | 5,257 | $10.22 | $53.7K | Form 4 |
| 2026-09-17 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Option exercise / conversion | 5,257 | $0.96 | $5.0K | Form 4 |
| 2026-09-16 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Option exercise / conversion (derivative) | 21,399 | — | $0 | Form 4 |
| 2026-09-16 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Open-market sale | 21,399 | $10.11 | $216.3K | Form 4 |
| 2026-09-16 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Option exercise / conversion | 21,399 | $0.96 | $20.5K | Form 4 |
| 2026-09-15 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Option exercise / conversion (derivative) | 1,000 | — | $0 | Form 4 |
| 2026-09-15 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Open-market sale | 1,000 | $10.00 | $10.0K | Form 4 |
| 2026-09-15 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Option exercise / conversion | 1,000 | $0.96 | $960 | Form 4 |
| 2026-09-02 | Brown Christopher D. | Director | Open-market sale | 30,000 | $10.58 | $317.4K | Form 4 |
| 2026-08-25 | Griffith Joseph H. IV | Officer (Chief Financial Officer) | Open-market sale | 11,459 | $10.95 | $125.5K | Form 4 |
| 2026-08-21 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 41,578 | $10.61 | $441.2K | Form 4 |
| 2026-08-20 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 8,422 | $10.52 | $88.6K | Form 4 |
| 2026-08-17 | Knopp Kevin J. | Director, Officer (President and CEO) | Open-market sale | 20,000 | $10.35 | $207.0K | Form 4 |
| 2026-08-13 | Knopp Kevin J. | Director, Officer (President and CEO) | Open-market sale | 7,622 | $10.06 | $76.7K | Form 4 |
| 2026-08-12 | Knopp Kevin J. | Director, Officer (President and CEO) | Open-market sale | 2,747 | $10.07 | $27.7K | Form 4 |
| 2026-08-11 | Knopp Kevin J. | Director, Officer (President and CEO) | Open-market sale | 30,170 | $10.16 | $306.5K | Form 4 |
| 2026-08-11 | Knopp Kevin J. | Director, Officer (President and CEO) | Open-market sale | 115,748 | $9.83 | $1.14M | Form 4 |
| 2026-08-11 | Brown Christopher D. | Director | Open-market sale | 8,358 | $9.23 | $77.1K | Form 4 |
| 2026-08-10 | Knopp Kevin J. | Director, Officer (President and CEO) | Open-market sale | 348 | $9.06 | $3.2K | Form 4 |
| 2026-08-10 | Brown Christopher D. | Director | Open-market sale | 9,442 | $9.03 | $85.3K | Form 4 |
| 2026-08-05 | Brown Christopher D. | Director | Open-market sale | 20,000 | $8.49 | $169.8K | Form 4 |
| 2026-08-04 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 50,000 | $8.36 | $417.8K | Form 4 |
| 2026-08-01 | Vann Brandi C | Director | Option exercise / conversion (derivative) | 5,192 | — | $0 | Form 4 |
| 2026-08-01 | Vann Brandi C | Director | Option exercise / conversion | 5,192 | — | — | Form 4 |
| 2026-07-02 | Brown Christopher D. | Director | Open-market sale | 2,200 | $9.02 | $19.8K | Form 4 |
| 2026-07-02 | Knopp Kevin J. | Director, Officer (President and CEO) | Open-market sale | 222 | $9.07 | $2.0K | Form 4 |
| 2026-06-30 | Brown Christopher D. | Director | Open-market sale | 20,000 | $8.84 | $176.8K | Form 4 |
| 2026-06-26 | Knopp Kevin J. | Director, Officer (President and CEO) | Open-market sale | 2,798 | $9.09 | $25.4K | Form 4 |
| 2026-06-25 | Leonhart Michele M. | Director | Option exercise / conversion (derivative) | 6,486 | — | $0 | Form 4 |
| 2026-06-25 | Leonhart Michele M. | Director | Option exercise / conversion | 6,486 | — | — | Form 4 |
| 2026-06-25 | Knopp Kevin J. | Director, Officer (President and CEO) | Open-market sale | 16,388 | $9.10 | $149.1K | Form 4 |
| 2026-06-24 | Knopp Kevin J. | Director, Officer (President and CEO) | Open-market sale | 40,535 | $9.14 | $370.5K | Form 4 |
| 2026-06-23 | Knopp Kevin J. | Director, Officer (President and CEO) | Open-market sale | 3,422 | $9.06 | $31.0K | Form 4 |
| 2026-06-23 | Brown Christopher D. | Director | Open-market sale | 9,900 | $9.04 | $89.5K | Form 4 |
| 2026-06-23 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 3,050 | $9.00 | $27.5K | Form 4 |
| 2026-06-22 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 4,668 | $8.99 | $42.0K | Form 4 |
| 2026-06-11 | Spoto Mark | Director | Grant / award / vesting (derivative) | 6,209 | — | $0 | Form 4 |
| 2026-06-11 | Spoto Mark | Director | Grant / award / vesting (derivative) | 13,656 | — | $0 | Form 4 |
| 2026-06-11 | CRANDELL KEITH | Director | Grant / award / vesting (derivative) | 6,209 | — | $0 | Form 4 |
| 2026-06-11 | CRANDELL KEITH | Director | Grant / award / vesting (derivative) | 13,656 | — | $0 | Form 4 |
| 2026-06-11 | ELOI FENEL M | Director | Grant / award / vesting (derivative) | 6,209 | — | $0 | Form 4 |
| 2026-06-11 | ELOI FENEL M | Director | Grant / award / vesting (derivative) | 13,656 | — | $0 | Form 4 |
| 2026-06-11 | Hunt Anthony | Director | Grant / award / vesting (derivative) | 6,209 | — | $0 | Form 4 |
| 2026-06-11 | Hunt Anthony | Director | Grant / award / vesting (derivative) | 13,656 | — | $0 | Form 4 |
| 2026-06-11 | HRUSOVSKY E KEVIN | Director | Grant / award / vesting (derivative) | 6,209 | — | $0 | Form 4 |
| 2026-06-11 | HRUSOVSKY E KEVIN | Director | Grant / award / vesting (derivative) | 13,656 | — | $0 | Form 4 |
| 2026-06-11 | Leonhart Michele M. | Director | Grant / award / vesting (derivative) | 6,209 | — | $0 | Form 4 |
| 2026-06-11 | Leonhart Michele M. | Director | Grant / award / vesting (derivative) | 13,656 | — | $0 | Form 4 |
| 2026-06-11 | Vann Brandi C | Director | Grant / award / vesting (derivative) | 6,209 | — | $0 | Form 4 |
| 2026-06-11 | Vann Brandi C | Director | Grant / award / vesting (derivative) | 13,656 | — | $0 | Form 4 |
| 2026-06-10 | Spoto Mark | Director | Option exercise / conversion (derivative) | 14,083 | — | $0 | Form 4 |
| 2026-06-10 | Spoto Mark | Director | Option exercise / conversion | 14,083 | — | — | Form 4 |
| 2026-06-10 | CRANDELL KEITH | Director | Option exercise / conversion (derivative) | 14,083 | — | $0 | Form 4 |
| 2026-06-10 | CRANDELL KEITH | Director | Option exercise / conversion | 14,083 | — | — | Form 4 |
| 2026-06-10 | ELOI FENEL M | Director | Option exercise / conversion (derivative) | 14,083 | — | $0 | Form 4 |
| 2026-06-10 | ELOI FENEL M | Director | Option exercise / conversion | 14,083 | — | — | Form 4 |
| 2026-06-10 | Hunt Anthony | Director | Option exercise / conversion (derivative) | 14,083 | — | $0 | Form 4 |
| 2026-06-10 | Hunt Anthony | Director | Option exercise / conversion | 14,083 | — | — | Form 4 |
| 2026-06-10 | HRUSOVSKY E KEVIN | Director | Option exercise / conversion (derivative) | 14,083 | — | $0 | Form 4 |
| 2026-06-10 | HRUSOVSKY E KEVIN | Director | Option exercise / conversion | 14,083 | — | — | Form 4 |
| 2026-06-10 | Leonhart Michele M. | Director | Option exercise / conversion (derivative) | 14,083 | — | $0 | Form 4 |
| 2026-06-10 | Leonhart Michele M. | Director | Option exercise / conversion | 14,083 | — | — | Form 4 |
| 2026-06-04 | Brown Christopher D. | Director | Open-market sale | 100 | $9.00 | $900 | Form 4 |
| 2026-06-04 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 39,782 | $8.97 | $356.9K | Form 4 |
| 2026-06-03 | Brown Christopher D. | Director | Open-market sale | 20,000 | $8.73 | $174.6K | Form 4 |
| 2026-06-02 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 2,500 | $8.95 | $22.4K | Form 4 |
| 2026-05-28 | Griffith Joseph H. IV | Officer (Chief Financial Officer) | Open-market sale | 6,940 | $9.03 | $62.7K | Form 4 |
| 2026-05-28 | Brown Christopher D. | Director | Open-market sale | 30,000 | $9.00 | $270.0K | Form 4 |
| 2026-05-28 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 170,442 | $8.66 | $1.48M | Form 4 |
| 2026-05-27 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 15,000 | $8.25 | $123.8K | Form 4 |
| 2026-05-27 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 1,500 | $8.25 | $12.4K | Form 4 |
| 2026-05-11 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 5,000 | $8.25 | $41.3K | Form 4 |
| 2026-05-08 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Open-market sale | 18,255 | $8.11 | $148.0K | Form 4 |
| 2026-05-08 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 3,025 | $8.20 | $24.8K | Form 4 |
| 2026-05-07 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 12,819 | $8.20 | $105.2K | Form 4 |
| 2026-05-06 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 57,365 | $8.06 | $462.2K | Form 4 |
| 2026-05-06 | AWM Investment Company, Inc. | 10% owner | Open-market sale | 5,000 | $8.00 | $40.0K | Form 4 |
| 2026-05-06 | Brown Christopher D. | Director | Open-market sale | 20,000 | $7.23 | $144.6K | Form 4 |
| 2026-05-01 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Option exercise / conversion (derivative) | 26,042 | — | $0 | Form 4 |
| 2026-05-01 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Open-market sale | 7,787 | $6.83 | $53.2K | Form 4 |
| 2026-05-01 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Option exercise / conversion | 26,042 | — | — | Form 4 |
| 2026-04-28 | Kenneweg John | Officer (SVP, Sales & Product Marketing) | Grant / award / vesting (derivative) | 26,042 | — | $0 | Form 4 |
| 2026-04-21 | Otitoju Kolawole A. | Officer (Chief Bus. & Strategy Officer) | Grant / award / vesting (derivative) | 110,193 | — | $0 | Form 4 |
| 2026-04-21 | Otitoju Kolawole A. | Officer (Chief Bus. & Strategy Officer) | Grant / award / vesting (derivative) | 146,789 | — | $0 | Form 4 |
| 2026-04-10 | McCallion Kevin J. | Officer (SVP, Products and Production) | Option exercise / conversion (derivative) | 2,693 | — | $0 | Form 4 |
| 2026-04-10 | McCallion Kevin J. | Officer (SVP, Products and Production) | Open-market sale | 2,693 | $7.01 | $18.9K | Form 4 |
| 2026-04-10 | McCallion Kevin J. | Officer (SVP, Products and Production) | Option exercise / conversion | 2,693 | $1.05 | $2.8K | Form 4 |
Ask the chat about MASS's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: 908 DEVICES INC (MASS).
Last updated 2026-10-06 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.