MASS
908 Devices Inc.
NASDAQ · Healthcare · Medical - Devices · US
$10.05
+0.10%0
Insider buys (3m)
23
Insider sells (3m)
-$4.1M
Net value (3m)
+25.3%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Aug 27, 2026 | Griffith Joseph H. IV · officer: Chief Financial Officer | Sale | 11,459 | $11 |
| Aug 24, 2026 | AWM Investment Company, Inc. · 10 percent owner | Sale | 8,422 | $11 |
| Aug 24, 2026 | AWM Investment Company, Inc. · 10 percent owner | Sale | 41,578 | $11 |
| Aug 17, 2026 | Knopp Kevin J. · director, officer: President and CEO | Sale | 20,000 | $10 |
| Aug 17, 2026 | Knopp Kevin J. · director, officer: President and CEO | Sale | 7,622 | $10 |
| Aug 12, 2026 | Knopp Kevin J. · director, officer: President and CEO | Sale | 115,748 | $9.83 |
| Aug 12, 2026 | Knopp Kevin J. · director, officer: President and CEO | Sale | 348 | $9.06 |
| Aug 12, 2026 | Knopp Kevin J. · director, officer: President and CEO | Sale | 2,747 | $10 |
| Aug 12, 2026 | Brown Christopher D. · director | Sale | 8,358 | $9.23 |
| Aug 12, 2026 | Brown Christopher D. · director | Sale | 9,442 | $9.03 |
| Aug 12, 2026 | Knopp Kevin J. · director, officer: President and CEO | Sale | 30,170 | $10 |
| Aug 7, 2026 | Brown Christopher D. · director | Sale | 20,000 | $8.49 |
| Aug 6, 2026 | AWM Investment Company, Inc. · 10 percent owner | Sale | 50,000 | $8.36 |
| Aug 3, 2026 | Vann Brandi C · director | M-Exempt | 5,192 | $0.00 |
| Jul 7, 2026 | Knopp Kevin J. · director, officer: President and CEO | Sale | 222 | $9.07 |
| Jul 7, 2026 | Brown Christopher D. · director | Sale | 2,200 | $9.02 |
| Jul 2, 2026 | Brown Christopher D. · director | Sale | 20,000 | $8.84 |
| Jun 30, 2026 | Knopp Kevin J. · director, officer: President and CEO | Sale | 2,798 | $9.09 |
| Jun 25, 2026 | Leonhart Michele M. · director | M-Exempt | 6,486 | $0.00 |
| Jun 25, 2026 | Knopp Kevin J. · director, officer: President and CEO | Sale | 3,422 | $9.06 |
| Jun 25, 2026 | Knopp Kevin J. · director, officer: President and CEO | Sale | 16,388 | $9.10 |
| Jun 25, 2026 | Knopp Kevin J. · director, officer: President and CEO | Sale | 40,535 | $9.14 |
| Jun 25, 2026 | Brown Christopher D. · director | Sale | 9,900 | $9.04 |
| Jun 24, 2026 | AWM Investment Company, Inc. · 10 percent owner | Sale | 3,050 | $9.00 |
| Jun 24, 2026 | AWM Investment Company, Inc. · 10 percent owner | Sale | 4,668 | $8.99 |
| Jun 12, 2026 | Vann Brandi C · director | A-Award | 6,209 | $8.22 |
| Jun 12, 2026 | CRANDELL KEITH · director | M-Exempt | 14,083 | $0.00 |
| Jun 12, 2026 | Hunt Anthony · director | M-Exempt | 14,083 | $0.00 |
| Jun 12, 2026 | ELOI FENEL M · director | A-Award | 13,656 | $0.00 |
| Jun 12, 2026 | Hunt Anthony · director | A-Award | 6,209 | $8.22 |
Institutional positioning
13F filings over the trailing two quarters
New 27Increased 77Reduced 81Sold out 11
| Filer | Action | Shares | Filed |
|---|---|---|---|
| First Light Asset Management, LLC | Increased | 6,282,804 | Aug 14, 2026 |
| FIRST LIGHT ASSET MANAGEMENT, LLC | Increased | 6,072,563 | May 15, 2026 |
| AWM INVESTMENT COMPANY, INC. | Unchanged | 5,199,924 | May 15, 2026 |
| AWM Investment Company, Inc. | Reduced | 4,879,773 | Aug 14, 2026 |
| ARK Investment Management LLC | Increased | 2,027,920 | Aug 14, 2026 |
| ARK INVESTMENT MANAGEMENT LLC | Reduced | 1,946,685 | May 12, 2026 |
| BlackRock, Inc. | Increased | 1,944,236 | Aug 7, 2026 |
| NEEDHAM INVESTMENT MANAGEMENT LLC | Increased | 1,820,620 | Aug 14, 2026 |
| BLACKROCK, INC. | Reduced | 1,767,316 | May 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 1,291,570 | Aug 13, 2026 |
| NEEDHAM INVESTMENT MANAGEMENT LLC | Increased | 1,240,000 | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 1,119,236 | May 15, 2026 |
| First Eagle Investment Management, LLC | Increased | 929,985 | Aug 24, 2026 |
| FIRST EAGLE INVESTMENT MANAGEMENT, LLC | Increased | 803,606 | May 14, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 761,797 | Aug 12, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Aug 27, 2026