908 Devices Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Griffith Joseph H. IV | Chief Financial Officer | Sale | 708 | $9.04 | $6,400 | 97,222 | Oct 3, 2025 |
| Griffith Joseph H. IV | Chief Financial Officer | Sale | 5,000 | $7.07 | $35,350 | 97,930 | Sep 19, 2025 |
| Leonhart Michele M. | — | Option Exercise | 6,485 | — | — | 6,485 | Jun 25, 2025 |
| Turner Michael S. | Chief Legal & Admin Officer | Sale | 16,082 | $7.51 | $120,776 | 8,521 | Jun 18, 2025 |
| HRUSOVSKY E KEVIN | — | Option Exercise | 11,364 | — | — | 151,307 | Jun 11, 2025 |
| Hunt Anthony | — | Option Exercise | 11,364 | — | — | 30,085 | Jun 11, 2025 |
| George Jeffrey P. | — | Option Exercise | 11,364 | — | — | 26,814 | Jun 11, 2025 |
| ELOI FENEL M | — | Option Exercise | 11,364 | — | — | 26,814 | Jun 11, 2025 |
| Eisenberg Marcia | — | Option Exercise | 11,364 | — | — | 25,957 | Jun 11, 2025 |
| CRANDELL KEITH | — | Option Exercise | 11,364 | — | — | 25,291 | Jun 11, 2025 |
| Spoto Mark | — | Option Exercise | 11,364 | — | — | 74,335 | Jun 11, 2025 |
| Griffith Joseph H. IV | Chief Financial Officer | Sale | 6,940 | $7.08 | $49,135 | 102,930 | Jun 4, 2025 |
| Knopp Kevin J. | President and CEO | Purchase | 15,000 | $4.44 | $66,600 | 722,733 | May 15, 2025 |
| Spoto Mark | — | Purchase | 7,000 | $4.30 | $30,100 | 59,971 | May 14, 2025 |
| Knopp Kevin J. | President and CEO | Purchase | 15,000 | $4.32 | $64,800 | 707,733 | May 14, 2025 |
| Hunt Anthony | — | Option Exercise | 2,058 | — | — | 18,721 | Mar 2, 2025 |
| Turner Michael S. | Chief Legal & Admin Officer | Option Exercise | 9,909 | — | — | 23,441 | Feb 3, 2025 |
| Brown Christopher D. | Chief Product Officer | Option Exercise | 10,991 | — | — | 969,889 | Feb 3, 2025 |
| Griffith Joseph H. IV | Chief Financial Officer | Sale | 4,321 | $2.35 | $10,154 | 109,870 | Feb 1, 2025 |
| Knopp Kevin J. | President and CEO | Sale | 4,318 | $2.33 | $10,061 | 704,416 | Feb 1, 2025 |
| Brown Christopher D. | Chief Product Officer | Option Exercise | 55,131 | $1.58 | $87,107 | 946,453 | Dec 19, 2024 |
| Knopp Kevin J. | President and CEO | Option Exercise | 110,626 | $1.58 | $174,789 | 667,025 | Dec 13, 2024 |
| Brown Christopher D. | Chief Product Officer | Option Exercise | 6,328 | $1.58 | $9,998 | 891,322 | Aug 7, 2024 |
| CRANDELL KEITH | — | Option Exercise | 7,777 | — | — | 13,927 | Jun 12, 2024 |
| Spoto Mark | — | Option Exercise | 7,777 | — | — | 52,971 | Jun 12, 2024 |
| HRUSOVSKY E KEVIN | — | Option Exercise | 7,777 | — | — | 139,943 | Jun 12, 2024 |
| Hunt Anthony | — | Option Exercise | 7,777 | — | — | 16,663 | Jun 12, 2024 |
| George Jeffrey P. | — | Option Exercise | 7,777 | — | — | 15,450 | Jun 12, 2024 |
| ELOI FENEL M | — | Option Exercise | 7,777 | — | — | 15,450 | Jun 12, 2024 |
| Eisenberg Marcia | — | Option Exercise | 7,777 | — | — | 14,593 | Jun 12, 2024 |
| Eisenberg Marcia | — | Option Exercise | 682 | — | — | 6,816 | Jun 7, 2024 |
| Knopp Kevin J. | President and CEO | Purchase | 10,000 | $6.42 | $64,200 | 508,981 | May 13, 2024 |
| Knopp Kevin J. | President and CEO | Purchase | 10,000 | $5.77 | $57,700 | 498,981 | May 10, 2024 |
| Knopp Kevin J. | President and CEO | Purchase | 10,000 | $5.83 | $58,300 | 488,981 | May 9, 2024 |
| Knopp Kevin J. | President and CEO | Purchase | 10,000 | $5.72 | $57,200 | 478,981 | May 8, 2024 |
| Knopp Kevin J. | President and CEO | Purchase | 10,000 | $5.60 | $56,000 | 468,981 | May 7, 2024 |
| Knopp Kevin J. | President and CEO | Option Exercise | 47,000 | $1.75 | $82,250 | 458,981 | Apr 16, 2024 |
| Brown Christopher D. | Chief Product Officer | Option Exercise | 3,600 | $1.75 | $6,300 | 884,994 | Apr 1, 2024 |
| Griffith Joseph H. IV | Chief Financial Officer | Option Exercise | 8,437 | $1.58 | $13,330 | 93,437 | Mar 26, 2024 |
| Hunt Anthony | — | Option Exercise | 2,057 | — | — | 8,886 | Mar 4, 2024 |
| George Jeffrey P. | — | Option Exercise | 508 | — | — | 7,673 | Feb 22, 2024 |
| ELOI FENEL M | — | Option Exercise | 508 | — | — | 7,673 | Feb 22, 2024 |
| Griffith Joseph H. IV | Chief Financial Officer | Sale | 1,888 | $7.00 | $13,216 | 93,521 | Feb 1, 2024 |
| Turner Michael S. | Chief Legal & Admin Officer | Option Exercise | 9,910 | — | — | 14,337 | Feb 1, 2024 |
| Knopp Kevin J. | President and CEO | Option Exercise | 13,449 | — | — | 421,052 | Feb 1, 2024 |
| Brown Christopher D. | Chief Product Officer | Sale | 1,599 | $6.99 | $11,177 | 888,752 | Feb 1, 2024 |
| Griffith Joseph H. IV | Chief Financial Officer | Sale | 6,000 | $12.08 | $72,480 | 80,000 | Dec 28, 2023 |
| Griffith Joseph H. IV | Chief Financial Officer | Sale | 5,580 | $9.08 | $50,666 | 86,000 | Dec 19, 2023 |
| Brown Christopher D. | Chief Product Officer | Sale | 1,305 | $9.08 | $11,849 | 890,510 | Dec 19, 2023 |
| Eisenberg Marcia | — | Option Exercise | 4,771 | — | — | 6,134 | Jun 14, 2023 |