Amphastar Pharmaceuticals, Inc.
Insider Ownership
| 8-K | 34 | 07/21/2025 | 07/18/2025 |
| 10-K | 34 | 03/03/2025 | 12/31/2024 |
| 8-K | 34 | 02/27/2025 | 02/27/2025 |
| 10-Q | 34 | 11/07/2024 | 09/30/2024 |
| 8-K | 34 | 11/06/2024 | 11/06/2024 |
| 8-K | 34 | 08/30/2024 | 08/28/2024 |
| 10-Q | 34 | 08/09/2024 | 06/30/2024 |
| 8-K | 34 | 06/04/2024 | 06/03/2024 |
| 8-K | 34 | 05/08/2024 | 05/08/2024 |
| 8-K | 34 | 02/28/2024 | 02/28/2024 |
≥5% Ownership
| 4 | 07/22/2025 | 07/18/2025 | |
| 3 | 07/22/2025 | 07/18/2025 | |
| 4 | 07/03/2025 | 07/02/2025 | |
| 4 | 06/04/2025 | 06/02/2025 | |
| 4 | 06/04/2025 | 06/02/2025 | |
| 4 | 06/04/2025 | 06/02/2025 | |
| 4 | 06/04/2025 | 06/02/2025 | |
| 4 | 06/04/2025 | 06/02/2025 | |
| 4 | 06/04/2025 | 06/02/2025 | |
| 4 | 05/20/2025 | 05/19/2025 |