4
Changes in Ownership
Amphastar Pharmaceuticals, Inc. Filed Acc 0001415889-25-017423
CEO & CHIEF SCIENTIFIC OFFICER acquired 200,000 shares (option exercise)
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 | 2025-06-13 | Option exercise | +200,000 | $13.03 | $2,606,000 | 2,847,659 | D |
| Derivatives | |||||||
| Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | 2025-06-13 | Option exercise · Employee Stock Option (right to buy) | −200,000 | 205,003 | D | ||
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