Amphastar Pharmaceuticals, Inc.
AMPH
DELAYED 1 MONTH
21 insider filings · Latest: Jun 1, 2026
Common Stock Transactions
No transactions found.
Stock Options & Derivatives
| Txn Date | Accepted | Insider | Type | Shares | Exercise Price | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|
| Jun 1, 2026 | Jun 4 1:22 AM | Richard K PrinsDirector | Grant/Award | 17,365 | $18.42 | 17,365(D) | View → |
| Jun 1, 2026 | Jun 4 1:20 AM | Howard LeeDirector | Grant/Award | 17,365 | $18.42 | 17,365(D) | View → |
| Jun 1, 2026 | Jun 4 12:34 AM | ZASLOFF MICHAEL ADirector | Grant/Award | 17,365 | $18.42 | 17,365(D) | View → |
| Jun 1, 2026 | Jun 4 12:33 AM | Diane G. GerstDirector | Grant/Award | 17,365 | $18.42 | 17,365(D) | View → |
| Jun 1, 2026 | Jun 4 12:31 AM | David Russell GaughDirector | Grant/Award | 17,365 | $18.42 | 17,365(D) | View → |
| Jun 1, 2026 | Jun 4 12:29 AM | Gayle DeflinDirector | Grant/Award | 17,365 | $18.42 | 17,365(D) | View → |
| Mar 9, 2026 | Mar 12 1:29 AM | William J PetersDirector, CFO, EVP & TREASURER | Grant/Award | 121,071 | $19.21 | 121,071(D) | View → |
| Mar 9, 2026 | Mar 12 12:15 AM | Rong ZhouSENIOR EVP, PRODUCTION CENTER | Grant/Award | 81,341 | $19.21 | 81,341(D) | View → |
| Mar 9, 2026 | Mar 11 10:26 PM | Yakob LiawatidewiDirector, EVP CORP ADMIN CENTER | Grant/Award | 73,126 | $19.21 | 73,126(D) | View → |
| Mar 9, 2026 | Mar 11 9:58 PM | Jack Y. ZhangDirector, CEO & CHIEF SCIENTIFIC OFFICER, 10% Owner | Grant/Award | 521,810 | $19.21 | 149,472(I) | View → |