4//SEC Filing
Zhou Rong 4
Accession 0001415889-25-007561
CIK 0001297184other
Filed
Mar 9, 8:00 PM ET
Accepted
Mar 10, 6:10 PM ET
Size
6.5 KB
Accession
0001415889-25-007561
Insider Transaction Report
Form 4
Zhou Rong
SENIOR EVP, PRODUCTION CENTER
Transactions
- Tax Payment
Common Stock
2025-03-06$28.32/sh−1,354$38,345→ 115,994 total
Holdings
- 99,668(indirect: See footnote)
Common Stock
- 5,000(indirect: See footnote)
Common Stock
Footnotes (3)
- [F1]The reported shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs.
- [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.
Documents
Issuer
Amphastar Pharmaceuticals, Inc.
CIK 0001297184
Entity typeother
Related Parties
1- filerCIK 0001645326
Filing Metadata
- Form type
- 4
- Filed
- Mar 9, 8:00 PM ET
- Accepted
- Mar 10, 6:10 PM ET
- Size
- 6.5 KB