Knopp Kevin J.
President and CEO
Knopp Kevin J. has filed 6 SEC Form 4 filings (16 transaction rows) across 1 company, with disclosures dating back to 2026. 6 of those filings fall inside the rolling window. Most recent filing: Aug 17, 2026.
On the most recent filing, Knopp Kevin J. is listed as President and CEO at 908 Devices Inc. Inside the rolling window, Knopp Kevin J. reported no open-market purchases and 11 open-market sales totaling $2.6M in MASS. The largest disclosed transaction in the window is a sale of 145,918 MASS shares on Aug 11, 2026, worth $1.4M.
Companies traded
Other insiders at MASS
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$2.6M
reported sales (SEC code S)
Companies
1
in the rolling window
| Source | |||||||
|---|---|---|---|---|---|---|---|
| MASS | President and CEO | Sale | 7,622 | $77K | Aug 17 | SEC ↗ | |
| MASS | President and CEO | Sale | 20,000 | $207K | Aug 17 | SEC ↗ | |
| MASS | President and CEO | Sale | 348 | $3K | Aug 12 | SEC ↗ | |
| MASS | President and CEO | Sale | 145,918 | $1.4M | Aug 12 | SEC ↗ | |
| MASS | President and CEO | Sale | 2,747 | $28K | Aug 12 | SEC ↗ | |
| MASS | President and CEO | Sale | 222 | $2K | Jul 7 | SEC ↗ | |
| MASS | President and CEO | Sale | 2,798 | $25K | Jun 30 | SEC ↗ | |
| MASS | President and CEO | Sale | 3,422 | $31K | Jun 25 | SEC ↗ | |
| MASS | President and CEO | Sale | 40,535 | $370K | Jun 25 | SEC ↗ | |
| MASS | President and CEO | Sale | 16,388 | $149K | Jun 25 | SEC ↗ | |
| MASS | President and CEO | Sale | 34,764 | $215K | Feb 3 | SEC ↗ |
Frequently asked questions
How many SEC Form 4 filings has Knopp Kevin J. made?
Knopp Kevin J. has filed 6 SEC Form 4 filings (16 transaction rows) across 1 company since 2026.
Which companies does Knopp Kevin J. trade?
Knopp Kevin J. has filed SEC Form 4 disclosures for 1 company, including MASS.
When was Knopp Kevin J.'s most recent SEC Form 4 filing?
Knopp Kevin J.'s most recent SEC Form 4 filing on Tracefour is dated Aug 17, 2026.
What is Knopp Kevin J.'s job title?
On the most recent SEC Form 4 filings tracked by Tracefour, Knopp Kevin J. is listed as President and CEO.
What is Knopp Kevin J.'s total buy and sell value in the current window?
Inside the rolling retention window, Knopp Kevin J. bought $0 and sold $2.6M based on SEC Form 4 filings.
What was Knopp Kevin J.'s largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 145,918 MASS shares on 2026-08-11, worth $1.4M, per SEC Form 4 filings.