4
Changes in Ownership
Amphastar Pharmaceuticals, Inc. Filed Acc 0001415889-25-007501
CEO & CHIEF SCIENTIFIC OFFICER gave up 12,714 shares (to pay taxes)
From the SEC's structured data for this filing
Trades in this filing
| Insider | Date | Transaction | Shares | Price | Value | Owned after | D/I |
|---|---|---|---|---|---|---|---|
| Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | 2025-03-06 | Shares withheld for taxes | −9,645 | $28.32 | $273,146 | 2,493,156 | D |
| Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | 2025-03-06 | Shares withheld for taxes | −3,069 | $28.32 | $86,914 | 1,099,261 | I |
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