PRINS RICHARD K 4
4 · Amphastar Pharmaceuticals, Inc. · Filed Jun 4, 2025
Insider Transaction Report
Form 4
PRINS RICHARD K
Director
Transactions
- Award
Common Stock
2025-06-02+5,122→ 35,183 total - Award
Stock Option (right to buy)
2025-06-02+11,402→ 11,402 totalExercise: $25.38Exp: 2035-06-02→ Common Stock (11,402 underlying)
Footnotes (2)
- [F1]The reported shares are represented by restricted stock units, or RSUs, all of which vest on June 2, 2026.
- [F2]All of the shares subject to the option vest on June 2, 2026.