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Kevin J. Knopp, President and CEO at 908 Devices, sold MASS on Jun 24, 2026

Data as of Oct 16

▼ SELL$370K40,535 shares at $9.14Kevin J. Knopp President and CEOMASS 908 Devices Inc.
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Traded
Jun 24, 2026
Disclosed
Jun 25, 2026
Filed
1 day after the trade

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 Jun 24, 2026TRADEDDISCLOSED
MASSSimilar stocks (XLV — its sector index fund), rebased to MASS's price on the disclosure day
MASS since disclosure
+25.4%
after the sale
Similar stocks (XLV) since disclosure
+13.5%
XLV — its sector index fund

Change in closing price from Jun 25, 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.$149Kdisclosed Jun 25 · filed the same day
  2. ▼ SELLKevin J. Knopp President and CEOMASS 908 Devices Inc.$31Kdisclosed Jun 25 · filed 2 days after the trade

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