Amphastar Pharmaceuticals, Inc.AMPHEarnings & Financial Report
Nasdaq · Health Care · Pharmaceutical Preparations
Amphastar Pharmaceuticals is a publicly traded American speciality pharmaceutical company. It was incorporated in May 2004 and primarily develops, manufactures, and sells inhalation and intranasal products.
Top Holders
| Holder | % Owned | Shares | Change | As of |
|---|---|---|---|---|
| BlackRock, Inc. | 12.60% | 6.0M | — | 2024-01-23 |
| The Vanguard Group | 5.88% | 2.8M | — | 2024-02-13 |
| Nos. of above persons | 4.52% | 2.2M | ▼ -2.31pp | 2024-03-06 |
Insider Transactions
Net 90d: +$0 · buys $0 / sells $0Range:
Action:
Role:
| Insider | Role | Action | ||||
|---|---|---|---|---|---|---|
| 2026-03-09 | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Grant | 39.4K | $0.00 | $0 |
| 2026-03-09 | PETERS WILLIAM J | CFO, EVP & TREASURER | Grant | 58.7K | $0.00 | $0 |
| 2026-03-09 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER | Grant | 180.5K | $0.00 | $0 |
| 2026-03-09 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER | Grant | 72.5K | $0.00 | $0 |
| 2026-03-09 | Yakob Liawatidewi | EVP CORP ADMIN CENTER | Grant | 35.5K | $0.00 | $0 |
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