BlackRock, Inc. 13D and 13G filings for Amphastar Pharmaceuticals, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2024-01-23 11:53 am Sale | 2023-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH | BlackRock Inc. BLK | 6,037,158 12.600% | -1,001,611 (-14.23%) | Filing |
| 2023-01-26 08:43 am Unchanged | 2022-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH | BlackRock Inc. BLK | 7,038,769 14.600% | 0 (Unchanged) | Filing |
| 2023-01-20 09:43 am Sale | 2022-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH | BlackRock Inc. BLK | 7,038,769 14.600% | -121,896 (-1.70%) | Filing |
| 2022-01-28 1:54 pm Purchase | 2021-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH | BlackRock Inc. BLK | 7,160,665 15.000% | 16,499 (+0.23%) | Filing |
| 2021-01-26 2:22 pm Purchase | 2020-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH | BlackRock Inc. BLK | 7,144,166 15.000% | 1,012,112 (+16.51%) | Filing |