Real time Form 13D and 13G transaction reports:
- 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.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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- Peter Lynch
What is insider trading>>
| Reported DateTime |
Transaction Date |
Type | Company Symbol |
Filed By Symbol |
Shares Owned % Owned |
Shares Vs. Prev Report | View |
| 2025-02-07 7:21 pm Sale |
2024-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
Zhang Jack Y. | 12,524,153 24.800% |
-911,057 (-6.78%) |
Filing History |
| 2024-03-06 10:23 am Sale |
2024-02-29 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
FEDERATED HERMES INC. FHI |
2,165,071 4.520% |
-1,107,690 (-33.85%) |
Filing History |
| 2024-02-13 4:58 pm Purchase |
2023-12-29 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
The Vanguard Group | 2,814,710 5.880% |
192,903 (+7.36%) |
Filing History |
| 2024-02-09 5:21 pm Purchase |
2023-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
Zhang Jack Y. | 13,435,210 26.200% |
324,515 (+2.48%) |
Filing History |
| 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 History |
| 2024-01-17 2:36 pm Sale |
2023-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
FEDERATED HERMES INC. FHI |
3,272,761 6.830% |
-11,456 (-0.35%) |
Filing History |
| 2023-02-09 11:07 am Purchase |
2022-12-30 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
The Vanguard Group | 2,621,807 5.420% |
153,696 (+6.23%) |
Filing History |
| 2023-02-01 09:43 am Sale |
2022-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
FEDERATED HERMES INC. FHI |
3,284,217 6.800% |
-180,118 (-5.20%) |
Filing History |
| 2023-01-27 4:06 pm Purchase |
2022-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
Zhang Jack Y. | 13,110,695 25.500% |
278,160 (+2.17%) |
Filing History |
| 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 History |
| 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 History |
| 2022-02-14 1:29 pm Purchase |
2021-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
FEDERATED HERMES INC. FHI |
3,464,335 7.240% |
238,452 (+7.39%) |
Filing History |
| 2022-02-11 4:05 pm Purchase |
2021-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
Zhang Jack Y. | 12,832,535 25.500% |
344,756 (+2.76%) |
Filing History |
| 2022-02-09 3:24 pm Sale |
2021-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
The Vanguard Group | 2,468,111 5.160% |
-9,916 (-0.40%) |
Filing History |
| 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 History |
| 2021-02-12 4:28 pm Sale |
2020-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
Zhang Jack Y. | 12,487,779 25.200% |
-509,908 (-3.92%) |
Filing History |
| 2021-02-12 2:55 pm Purchase |
2020-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
FEDERATED HERMES INC. FHI |
3,225,883 6.790% |
3,225,883 (New Position) |
Filing History |
| 2021-02-10 10:30 am Purchase |
2020-12-31 | 13G | Amphastar Pharmaceuticals, Inc. AMPH |
The Vanguard Group | 2,478,027 5.220% |
114,523 (+4.85%) |
Filing History |
| 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 History |