4
Changes in Ownership
Amphastar Pharmaceuticals, Inc. Filed Acc 0001104659-21-038580
CEO & Chief Scientific Officer gave up 34,131 shares (to pay taxes)
- CEO & Chief Scientific Officer acquired 184,101 shares (grant or award)
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 | 2021-03-16 | Shares withheld for taxes | −25,241 | $18.44 | $465,444 | 2,193,659 | D |
| Zhang Jack Y. CEO & Chief Scientific Officer | 2021-03-16 | Shares withheld for taxes | −8,890 | $18.44 | $163,932 | 1,431,479 | I |
| Zhang Jack Y. CEO & Chief Scientific Officer | 2021-03-17 | Grant or award | +127,209 | 2,320,868 | D | ||
| Zhang Jack Y. CEO & Chief Scientific Officer | 2021-03-17 | Grant or award | +56,892 | 1,488,371 | I | ||
| Derivatives | |||||||
| Zhang Jack Y. CEO & Chief Scientific Officer | 2021-03-17 | Grant or award · Employee Stock Option (right to buy) | +298,688 | 298,688 | D | ||
| Zhang Jack Y. CEO & Chief Scientific Officer | 2021-03-17 | Grant or award · Employee Stock Option (right to buy) | +133,585 | 133,585 | I | ||
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