Zhang Jack Y.
CEO & CHIEF SCIENTIFIC OFFICER · 4 insider transactions on file
All transactions
| Date | Ticker | Company | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-03-15 | AMPH | Amphastar Pharmaceuticals, Inc. | Tax withholding | 9,784 | $18.18 | $177,873.12 | filing |
| 2026-03-15 | AMPH | Amphastar Pharmaceuticals, Inc. | Tax withholding | 2,908 | $18.18 | $52,867.44 | filing |
| 2026-03-04 | AMPH | Amphastar Pharmaceuticals, Inc. | Tax withholding | 5,769 | $19.96 | $115,149.24 | filing |
| 2026-03-04 | AMPH | Amphastar Pharmaceuticals, Inc. | Tax withholding | 2,432 | $19.96 | $48,542.72 | filing |
Insider transactions from SEC Form 4 filings via EDGAR. Names appear as filed and aren't normalized across issuers.