4
Changes in Ownership
Amphastar Pharmaceuticals, Inc. Filed Acc 0000889740-26-000003
CEO & CHIEF SCIENTIFIC OFFICER gave up 10,850 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 | 2026-03-06 | Shares withheld for taxes | −7,773 | $19.34 | $150,330 | 2,834,117 | D |
| Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | 2026-03-06 | Shares withheld for taxes | −3,077 | $19.34 | $59,509 | 1,179,966 | I |
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