AlphaYouCD
Insider selling
Christopher D. Brown sold $270K of 908 Devices Inc. (MASS) stock
Christopher D. Brown, Dir of 908 Devices Inc. (MASS), sold 30,000 shares of MASS stock worth $270K, per an SEC Form 4 filed May 29, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade happened on May 28, 2026, 1 day before it was made public.
MASS has moved +21.8% since the trade date, from $8.93 to $10.88 (Sep 21, 2026 close).
- Traded
- May 28, 2026
- Disclosed
- May 29, 2026
- Filing delay
- 1 day
- Price since
- +21.8%
- 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.