Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not 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
What is insider trading>>
- Peter Lynch
What is insider trading>>

Common stock purchase or sale:
Transaction Date |
Reported DateTime |
Company | Symbol | Insider Relationship |
Shares Traded |
Average Price |
Total Amount |
Shares Owned |
Filing |
2024-03-05 Sale |
2024-03-06 5:57 pm |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
12,500 | $47.18 | $589,724 | 21,326 (Direct) |
View |
2023-08-15 Sale |
2023-08-16 8:23 pm |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
12,759 | $57.22 | $730,025 | 33,826 (Direct) |
View |
2023-05-15 Sale |
2023-05-16 8:01 pm |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
7,500 | $42.18 | $316,335 | 43,869 (Direct) |
View |
2022-05-16 Sale |
2022-05-17 7:46 pm |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
10,291 | $35.61 | $366,500 | 47,206 (Direct) |
View |
2022-03-16 Sale |
2022-03-17 5:13 pm |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
10,000 | $33.71 | $337,069 | 57,497 (Direct) |
View |
2021-05-13 Sale |
2021-05-14 7:01 pm |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
25,827 | $19.34 | $499,435 | 41,187 (Direct) |
View |
2020-05-14 Sale |
2020-05-18 4:36 pm |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
37,782 | $18.02 | $680,657 | 58,286 (Direct) |
View |
2020-05-12 Sale |
2020-05-14 4:18 pm |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
10,000 | $19 | $190,000 | 73,118 (Direct) |
View |
Stock options: Exercise, Award, Grant, Conversion
Transaction Date |
Reported DateTime |
Exercisable Expiration |
Company | Symnbol | Insider Relationship |
Shares Traded |
Conversion Price |
Shares Owned |
Filing |
2024-06-03 Option Award |
2024-06-05 5:56 pm |
N/A 2034-06-03 |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
9,940 | $0 | 31,266 (Direct) |
View |
2023-06-05 Option Award |
2023-06-07 5:20 pm |
N/A 2031-06-05 |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
9,732 | $0 | 53,601 (Direct) |
View |
2022-06-10 Option Award |
2022-06-14 5:31 pm |
N/A 2030-06-10 |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
15,147 | $0 | 62,353 (Direct) |
View |
2022-05-16 Exercise |
2022-05-17 7:46 pm |
N/A 2022-06-08 |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
10,291 | $0 | 47,206 (Direct) |
View |
2022-05-16 Exercise |
2022-05-17 7:46 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
10,291 | $17.11 | 47,206 (Direct) |
View |
2022-03-16 Exercise |
2022-03-17 5:13 pm |
N/A 2022-06-08 |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
10,000 | $0 | 57,497 (Direct) |
View |
2022-03-16 Exercise |
2022-03-17 5:13 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
10,000 | $17.11 | 57,497 (Direct) |
View |
2021-06-07 Option Award |
2021-06-08 9:01 pm |
N/A 2029-06-07 |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
23,201 | $0 | 64,388 (Direct) |
View |
2021-05-13 Exercise |
2021-05-14 7:01 pm |
N/A 2021-06-09 |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
25,827 | $0 | 41,187 (Direct) |
View |
2021-05-13 Exercise |
2021-05-14 7:01 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
25,827 | $16.43 | 41,187 (Direct) |
View |
2020-06-08 Option Award |
2020-06-09 8:29 pm |
N/A 2028-06-08 |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
21,855 | $0 | 57,191 (Direct) |
View |
2020-05-14 Exercise |
2020-05-18 4:36 pm |
N/A 2020-05-27 |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
37,782 | $0 | 58,286 (Direct) |
View |
2020-05-14 Exercise |
2020-05-18 4:36 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
37,782 | $15.11 | 58,286 (Direct) |
View |
2020-05-12 Exercise |
2020-05-14 4:18 pm |
N/A 2020-05-27 |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
10,000 | $0 | 73,118 (Direct) |
View |
2020-05-12 Exercise |
2020-05-14 4:18 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | ZASLOFF MICHAEL A Director |
10,000 | $15.11 | 73,118 (Direct) |
View |