AlphaYouWJ
Insider selling
William J Peters sold $184K of Amphastar Pharmaceuticals, Inc. (AMPH) stock
William J Peters, CFO, EVP & Treasurer of Amphastar Pharmaceuticals, Inc. (AMPH), sold 8,180 shares of AMPH stock worth $184K, per an SEC Form 4 filed Aug 11, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade happened on Aug 7, 2026, 4 days before it was made public.
AMPH has moved +17.0% since the trade date, from $20.78 to $24.32 (Sep 22, 2026 close).
- Traded
- Aug 7, 2026
- Disclosed
- Aug 11, 2026
- Filing delay
- 4 days
- Price since
- +17.0%
- Role
- CFO, EVP & Treasurer
- 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.