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Kevin J. Knopp, President and CEO at 908 Devices, sold MASS on Aug 17, 2026

Data as of Oct 16

▼ SELL$207K20,000 shares at $10.35Kevin J. Knopp President and CEOMASS 908 Devices Inc.
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Traded
Aug 17, 2026
Disclosed
Aug 17, 2026
Filed
The same day

Form 4s are due within two business days.

Official filing (SEC Form 4) ↗

The price around the disclosure

Kevin J. Knopp, President and CEO at 908 Devices, sold MASS on Aug 17, 2026TRADEDDISCLOSED
MASSSimilar stocks (XLV — its sector index fund), rebased to MASS's price on the disclosure day
MASS since disclosure
+10.5%
after the sale
Similar stocks (XLV) since disclosure
+5.8%
XLV — its sector index fund

Change in closing price from Aug 17, 2026 (the first trading day on or after disclosure) to Oct 16, 2026. Dividends excluded. Not a return anyone earned.

Our take

None of our tested rules fired on this trade.

Other trades in the same filing

  1. ▼ SELLKevin J. Knopp President and CEOMASS 908 Devices Inc.$76.7Kdisclosed Aug 17 · filed 4 days after the trade

See every trade on MASS →