AlphaYouCD
Insider selling
Christopher D. Brown sold $317K of 908 Devices Inc. (MASS) stock
Christopher D. Brown, Dir of 908 Devices Inc. (MASS), sold 30,000 shares of MASS stock worth $317K, per an SEC Form 4 filed Sep 4, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade happened on Sep 2, 2026, 2 days before it was made public.
MASS has moved +8.2% since the trade date, from $10.33 to $11.18 (Sep 22, 2026 close).
- Traded
- Sep 2, 2026
- Disclosed
- Sep 4, 2026
- Filing delay
- 2 days
- Price since
- +8.2%
- Role
- Dir
- Source
- SEC Form 4
More MASS insider and Congress trades
From a public SEC Form 4, linked above. Not investment advice, and not a recommendation to buy or sell.