Amphastar Pharmaceuticals, Inc.
SEC Filing List
AMPH CIK: 0001297184
| Form | Description | Owner/Filer | Filing Agent | Date | Actions |
|---|---|---|---|---|---|
| 8-K | Current report filing | Amphastar Pharmaceuticals, Inc. | 05/07/2026 | ||
| 10-Q | Quarterly report pursuant to Section 13 ... | Amphastar Pharmaceuticals, Inc. | 05/07/2026 | ||
| DEF 14A | Definitive proxy statements | Amphastar Pharmaceuticals, Inc. | 04/13/2026 | ||
| DEFA14A | Definitive additional proxy soliciting m... | Amphastar Pharmaceuticals, Inc. | 04/13/2026 | ||
| ARS | Annual report to security holders | Amphastar Pharmaceuticals, Inc. | 04/13/2026 | ||
| SCHEDULE 13G/A | 03/26/2026 | ||||
| 4 | Statement of changes in beneficial owner... | Zhou Rong | Amphastar Pharmaceuticals, Inc. | 03/17/2026 | |
| 4 | Statement of changes in beneficial owner... | Peters William J | Amphastar Pharmaceuticals, Inc. | 03/17/2026 | |
| 4 | Statement of changes in beneficial owner... | WILSON SONSINI GOODRICH & ROSATI PC /fa | 03/17/2026 | ||
| 4 | Statement of changes in beneficial owner... | Liawatidewi Yakob | Amphastar Pharmaceuticals, Inc. | 03/17/2026 | |
| No record found. | |||||
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