4
Changes in Ownership
Amphastar Pharmaceuticals, Inc. Filed Acc 0001104659-24-036270
CEO & Chief Scientific Officer gave up 634,199 shares (to pay taxes)
- CEO & Chief Scientific Officer acquired 1,032,976 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 | 2024-03-15 | Option exercise | +722,046 | $12.46 | $8,996,693 | 2,858,043 | D |
| Zhang Jack Y. CEO & Chief Scientific Officer | 2024-03-15 | Shares withheld for taxes | −408,721 | $43.05 | $17,595,439 | 2,449,322 | D |
| Zhang Jack Y. CEO & Chief Scientific Officer | 2024-03-17 | Shares withheld for taxes | −15,768 | $43.05 | $678,812 | 2,433,554 | D |
| Zhang Jack Y. CEO & Chief Scientific Officer | 2024-03-15 | Option exercise | +310,930 | $12.46 | $3,874,188 | 1,439,466 | I |
| Zhang Jack Y. CEO & Chief Scientific Officer | 2024-03-15 | Shares withheld for taxes | −202,658 | $43.05 | $8,724,427 | 1,236,808 | I |
| Zhang Jack Y. CEO & Chief Scientific Officer | 2024-03-17 | Shares withheld for taxes | −7,052 | $43.05 | $303,589 | 1,229,756 | I |
| Derivatives | |||||||
| Zhang Jack Y. CEO & Chief Scientific Officer | 2024-03-15 | Option exercise · Employee Stock Option (right to buy) | −722,046 | 0 | D | ||
| Zhang Jack Y. CEO & Chief Scientific Officer | 2024-03-15 | Option exercise · Employee Stock Option (right to buy) | −310,930 | 0 | I | ||
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