4
Changes in Ownership
Amphastar Pharmaceuticals, Inc. Filed Acc 0001415889-25-007188
CEO & CHIEF SCIENTIFIC OFFICER gave up 8,179 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 | 2025-03-04 | Shares withheld for taxes | −5,753 | $27.62 | $158,898 | 2,502,801 | D |
| Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | 2025-03-04 | Shares withheld for taxes | −2,426 | $27.62 | $67,006 | 1,102,330 | I |
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