AlphaYouJC
Insider selling
John Cox sold $107K of Dyne Therapeutics, Inc. (DYN) stock
John Cox, CEO & President of Dyne Therapeutics, Inc. (DYN), sold 5,658 shares of DYN stock worth $107K, per an SEC Form 4 filed Sep 8, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade was reported on Sep 8, 2026.
DYN has moved -15.7% since the trade date, from $20.31 to $17.12 (Sep 21, 2026 close).
- Traded
- Sep 8, 2026
- Disclosed
- Sep 8, 2026
- Filing delay
- 0 days
- Price since
- -15.7%
- Role
- CEO & President
- Source
- SEC Form 4
More DYN insider and Congress trades
From a public SEC Form 4, linked above. Not investment advice, and not a recommendation to buy or sell.