4//SEC Filing
PRINS RICHARD K 4
Accession 0001415889-25-015660
CIK 0001297184other
Filed
Jun 3, 8:00 PM ET
Accepted
Jun 4, 6:40 PM ET
Size
7.0 KB
Accession
0001415889-25-015660
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.
Documents
Issuer
Amphastar Pharmaceuticals, Inc.
CIK 0001297184
Entity typeother
Related Parties
1- filerCIK 0001047579
Filing Metadata
- Form type
- 4
- Filed
- Jun 3, 8:00 PM ET
- Accepted
- Jun 4, 6:40 PM ET
- Size
- 7.0 KB