AlphaYouMF
Insider selling
Martina Flammer MD sold $3.5M of INSMED Inc (INSM) stock
Martina Flammer MD, Chief Medical Officer of INSMED Inc (INSM), sold 27,173 shares of INSM stock worth $3.5M, per an SEC Form 4 filed Aug 7, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade happened on Aug 6, 2026, 1 day before it was made public.
INSM has moved -8.8% since the trade date, from $132.55 to $120.82 (Sep 22, 2026 close).
- Traded
- Aug 6, 2026
- Disclosed
- Aug 7, 2026
- Filing delay
- 1 day
- Price since
- -8.8%
- Role
- Chief Medical Officer
- Source
- SEC Form 4
More INSM insider and Congress trades
From a public SEC Form 4, linked above. Not investment advice, and not a recommendation to buy or sell.