4//SEC Filing
Zhou Rong 4
Accession 0001415889-25-007831
CIK 0001297184other
Filed
Mar 11, 8:00 PM ET
Accepted
Mar 12, 4:53 PM ET
Size
8.8 KB
Accession
0001415889-25-007831
Insider Transaction Report
Form 4
Zhou Rong
SENIOR EVP, PRODUCTION CENTER
Transactions
- Award
Common Srock
2025-03-10+24,692→ 140,686 total - Award
Employee Stock Option (right to buy)
2025-03-10+52,437→ 52,437 totalExercise: $28.41Exp: 2035-03-10→ Common Stock (52,437 underlying)
Holdings
- 5,000(indirect: See footnote)
Common Stock
- 99,668(indirect: See footnote)
Common Stock
Footnotes (4)
- [F1]The reported shares are represented by restricted stock units, or RSUs, which vest in four equal annual installments beginning on March 10, 2026.
- [F2]The shares are held of record by the Zhou Family Trust for which the reporting person serves as a trustee.
- [F3]The shares are held of record by the reporting person's spouse.
- [F4]The shares subject to the option vest in four equal annual installments beginning on March 10, 2026.
Documents
Issuer
Amphastar Pharmaceuticals, Inc.
CIK 0001297184
Entity typeother
Related Parties
1- filerCIK 0001645326
Filing Metadata
- Form type
- 4
- Filed
- Mar 11, 8:00 PM ET
- Accepted
- Mar 12, 4:53 PM ET
- Size
- 8.8 KB