Feeds › Insider trades
Insider trades
Open-market buys and sells by officers, directors and 10% owners, from SEC Form 4. Usually filed within two business days.
About this data
- What it is
- When a company's officers, directors or owners of more than 10% buy or sell its stock, they must report the trade to the SEC on Form 4. This feed shows purchases and sales on the open market; stock grants, option exercises and shares withheld for tax are left out.
- Who files it
- The insider, usually through the company, within two business days of the trade.
- How current
- We collect new filings throughout the day on SEC business days.
- Worth knowing
- Sales are often routine: insiders sell to diversify, to pay taxes, or under a 10b5-1 plan set up months in advance. A purchase with their own money is less common, which is why many investors pay closer attention to it.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Open-market trades per day, last 30 days
Purchases Sales
By trade date. Insiders have two business days to file, so the most recent days fill in later.
Latest open-market insider trades
Showing: ticker MASS
| Traded | Insider | Company | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Nov 4, 2026 | Christopher D. Brown Director | MASS 908 Devices Inc. | Sale | 30,000 | $10.95 | $328.5K Sale | Form 4 ↗ |
| Sep 24, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 24,000 | $11.36 | $272.6K Sale | Form 4 ↗ |
| Sep 23, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 1,000 | $11.25 | $11.3K Sale | Form 4 ↗ |
| Sep 17, 2026 | John Kenneweg SVP, Sales & Product Marketing | MASS 908 Devices Inc. | Sale | 5,257 | $10.22 | $53.7K Sale | Form 4 ↗ |
| Sep 16, 2026 | John Kenneweg SVP, Sales & Product Marketing | MASS 908 Devices Inc. | Sale | 21,399 | $10.11 | $216.3K Sale | Form 4 ↗ |
| Sep 15, 2026 | John Kenneweg SVP, Sales & Product Marketing | MASS 908 Devices Inc. | Sale | 1,000 | $10.00 | $10.0K Sale | Form 4 ↗ |
| Sep 2, 2026 | Christopher D. Brown Director | MASS 908 Devices Inc. | Sale | 30,000 | $10.58 | $317.4K Sale | Form 4 ↗ |
| Aug 25, 2026 | Joseph H. Griffith IV Chief Financial Officer | MASS 908 Devices Inc. | Sale | 11,459 | $10.95 | $125.5K Sale | Form 4 ↗ |
| Aug 21, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 41,578 | $10.61 | $441.1K Sale | Form 4 ↗ |
| Aug 20, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 8,422 | $10.52 | $88.6K Sale | Form 4 ↗ |
| Aug 17, 2026 | Kevin J. Knopp President and CEO, Director | MASS 908 Devices Inc. | Sale | 20,000 | $10.35 | $207.0K Sale | Form 4 ↗ |
| Aug 13, 2026 | Kevin J. Knopp President and CEO, Director | MASS 908 Devices Inc. | Sale | 7,622 | $10.06 | $76.7K Sale | Form 4 ↗ |
| Aug 12, 2026 | Kevin J. Knopp President and CEO, Director | MASS 908 Devices Inc. | Sale | 2,747 | $10.07 | $27.7K Sale | Form 4 ↗ |
| Aug 11, 2026 | Christopher D. Brown Director | MASS 908 Devices Inc. | Sale | 8,358 | $9.23 | $77.1K Sale | Form 4 ↗ |
| Aug 11, 2026 | Kevin J. Knopp President and CEO, Director | MASS 908 Devices Inc. | Sale | 30,170 | $10.16 | $306.5K Sale | Form 4 ↗ |
| Aug 11, 2026 | Kevin J. Knopp President and CEO, Director | MASS 908 Devices Inc. | Sale | 115,748 | $9.83 | $1.1M Sale | Form 4 ↗ |
| Aug 10, 2026 | Christopher D. Brown Director | MASS 908 Devices Inc. | Sale | 9,442 | $9.03 | $85.3K Sale | Form 4 ↗ |
| Aug 10, 2026 | Kevin J. Knopp President and CEO, Director | MASS 908 Devices Inc. | Sale | 348 | $9.06 | $3,153 Sale | Form 4 ↗ |
| Aug 5, 2026 | Christopher D. Brown Director | MASS 908 Devices Inc. | Sale | 20,000 | $8.49 | $169.8K Sale | Form 4 ↗ |
| Aug 4, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 50,000 | $8.36 | $418.0K Sale | Form 4 ↗ |
| Jul 2, 2026 | Christopher D. Brown Director | MASS 908 Devices Inc. | Sale | 2,200 | $9.02 | $19.8K Sale | Form 4 ↗ |
| Jul 2, 2026 | Kevin J. Knopp President and CEO, Director | MASS 908 Devices Inc. | Sale | 222 | $9.07 | $2,014 Sale | Form 4 ↗ |
| Jun 30, 2026 | Christopher D. Brown Director | MASS 908 Devices Inc. | Sale | 20,000 | $8.84 | $176.8K Sale | Form 4 ↗ |
| Jun 26, 2026 | Kevin J. Knopp President and CEO, Director | MASS 908 Devices Inc. | Sale | 2,798 | $9.09 | $25.4K Sale | Form 4 ↗ |
| Jun 25, 2026 | Kevin J. Knopp President and CEO, Director | MASS 908 Devices Inc. | Sale | 16,388 | $9.10 | $149.1K Sale | Form 4 ↗ |
| Jun 24, 2026 | Kevin J. Knopp President and CEO, Director | MASS 908 Devices Inc. | Sale | 40,535 | $9.14 | $370.5K Sale | Form 4 ↗ |
| Jun 23, 2026 | Christopher D. Brown Director | MASS 908 Devices Inc. | Sale | 9,900 | $9.04 | $89.5K Sale | Form 4 ↗ |
| Jun 23, 2026 | Kevin J. Knopp President and CEO, Director | MASS 908 Devices Inc. | Sale | 3,422 | $9.06 | $31.0K Sale | Form 4 ↗ |
| Jun 23, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 3,050 | $9.00 | $27.4K Sale | Form 4 ↗ |
| Jun 22, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 4,668 | $8.99 | $42.0K Sale | Form 4 ↗ |
| Jun 4, 2026 | Christopher D. Brown Director | MASS 908 Devices Inc. | Sale | 100 | $9.00 | $900 Sale | Form 4 ↗ |
| Jun 4, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 39,782 | $8.97 | $356.8K Sale | Form 4 ↗ |
| Jun 3, 2026 | Christopher D. Brown Director | MASS 908 Devices Inc. | Sale | 20,000 | $8.73 | $174.6K Sale | Form 4 ↗ |
| Jun 2, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 2,500 | $8.95 | $22.4K Sale | Form 4 ↗ |
| May 28, 2026 | Christopher D. Brown Director | MASS 908 Devices Inc. | Sale | 30,000 | $9.00 | $270.0K Sale | Form 4 ↗ |
| May 28, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 170,442 | $8.66 | $1.5M Sale | Form 4 ↗ |
| May 28, 2026 | Joseph H. Griffith IV Chief Financial Officer | MASS 908 Devices Inc. | Sale | 6,940 | $9.03 | $62.7K Sale | Form 4 ↗ |
| May 27, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 15,000 | $8.25 | $123.8K Sale | Form 4 ↗ |
| May 27, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 1,500 | $8.25 | $12.4K Sale | Form 4 ↗ |
| May 11, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 5,000 | $8.25 | $41.3K Sale | Form 4 ↗ |
| May 8, 2026 | John Kenneweg SVP, Sales & Product Marketing | MASS 908 Devices Inc. | Sale | 18,255 | $8.11 | $148.0K Sale | Form 4 ↗ |
| May 8, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 3,025 | $8.20 | $24.8K Sale | Form 4 ↗ |
| May 7, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 12,819 | $8.20 | $105.1K Sale | Form 4 ↗ |
| May 6, 2026 | Christopher D. Brown Director | MASS 908 Devices Inc. | Sale | 20,000 | $7.23 | $144.6K Sale | Form 4 ↗ |
| May 6, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 57,365 | $8.06 | $462.4K Sale | Form 4 ↗ |
| May 6, 2026 | AWM Investment Company, Inc. 10% owner | MASS 908 Devices Inc. | Sale | 5,000 | $8.00 | $40.0K Sale | Form 4 ↗ |
| May 1, 2026 | John Kenneweg SVP, Sales & Product Marketing | MASS 908 Devices Inc. | Sale | 7,787 | $6.83 | $53.2K Sale | Form 4 ↗ |
| Apr 10, 2026 | Kevin J. McCallion SVP, Products and Production | MASS 908 Devices Inc. | Sale | 2,693 | $7.01 | $18.9K Sale | Form 4 ↗ |
| Apr 10, 2026 | Christopher D. Brown Director | MASS 908 Devices Inc. | Sale | 17,578 | $7.07 | $124.3K Sale | Form 4 ↗ |
| Apr 9, 2026 | Kevin J. McCallion SVP, Products and Production | MASS 908 Devices Inc. | Sale | 5,420 | $7.03 | $38.1K Sale | Form 4 ↗ |
The newest 50 items, most recent first. Every row links to its original filing. Updated Nov 15, 2026, 5:33 PM EST.
Download CSV The rows of this feed, with the filters above. A download holds at most 10,000 rows; narrow the filters to get a smaller slice.
Other feeds: Congressional trades · Executive-branch trades · Bills in Congress · Roll-call votes · Corporate PAC donations · Lobbying · Capitol Hires · Lobbying and contracts · Government contracts · Planned insider sales · Executive pay · Ownership stakes (13D / 13G) · Institutional holdings (13F) · Short interest · Fails to deliver · Daily short volume · Wikipedia page views · App store ratings · H-1B visa applications · Stock splits · 8-K events · IPO filings · Deals · Private placements (Form D) · Merger clearances (HSR) · Layoff notices (WARN) · SEC enforcement · Patents · Clinical trial updates · FDA approvals and clearances