AlphaYouRK
Insider selling
Richard K Prins sold $162K of Amphastar Pharmaceuticals, Inc. (AMPH) stock
Richard K Prins, Dir of Amphastar Pharmaceuticals, Inc. (AMPH), sold 7,973 shares of AMPH stock worth $162K, per an SEC Form 4 filed Aug 12, 2026.
It was an open-market sale.
The trade happened on Aug 11, 2026, 1 day before it was made public.
AMPH has moved +19.9% since the trade date, from $20.42 to $24.48 (Sep 21, 2026 close).
- Traded
- Aug 11, 2026
- Disclosed
- Aug 12, 2026
- Filing delay
- 1 day
- Price since
- +19.9%
- Role
- Dir
- Source
- SEC Form 4
More AMPH insider and Congress trades
From a public SEC Form 4, linked above. Not investment advice, and not a recommendation to buy or sell.