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 |
2022-03-07 Sale |
2022-03-09 4:06 pm |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
13,026 | $29.35 | $382,313 | 165,564 (Direct) |
View |
2022-03-01 Sale |
2022-03-01 6:54 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director |
500 | $27.27 | $13,635 | 76,873 (Direct) |
View |
2022-02-25 Sale |
2022-03-01 4:07 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
13,246 | $28.77 | $381,087 | 174,975 (Indirect Direct) |
View |
2022-02-25 Sale |
2022-03-01 4:05 pm |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
23,000 | $28.47 | $654,850 | 131,116 (Direct) |
View |
2022-02-08 Sale |
2022-02-09 9:07 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
7,000 | $26.77 | $187,390 | 188,221 (Indirect Direct) |
View |
2022-02-08 Sale |
2022-02-09 9:06 pm |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
10,000 | $26.95 | $269,500 | 154,116 (Direct) |
View |
2022-02-01 Sale |
2022-02-02 4:05 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director |
500 | $24.08 | $12,041 | 77,373 (Direct) |
View |
2022-01-10 Sale |
2022-01-11 8:28 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
20,928 | $25.36 | $530,684 | 195,221 (Indirect Direct) |
View |
2022-01-07 Sale |
2022-01-11 6:22 pm |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
47,776 | $24.75 | $1,182,622 | 223,596 (Direct) |
View |
2022-01-03 Sale |
2022-01-04 4:54 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director |
500 | $23.22 | $11,609 | 77,873 (Direct) |
View |
2021-12-30 Sale |
2022-01-04 4:52 pm |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
10,000 | $23.4 | $234,000 | 204,595 (Direct) |
View |
2021-12-22 Sale |
2021-12-23 4:27 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director |
1,000 | $22.5 | $22,503 | 78,373 (Direct) |
View |
2021-12-21 Sale |
2021-12-22 5:04 pm |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
8,256 | $22.4 | $184,934 | 214,595 (Direct) |
View |
2021-12-16 Sale |
2021-12-17 7:52 pm |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
1,744 | $22.4 | $39,066 | 222,851 (Direct) |
View |
2021-12-10 Sale |
2021-12-13 7:36 pm |
Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director |
5,291 | $21.36 | $113,006 | 55,179 (Direct) |
View |
2021-11-22 Sale |
2021-11-23 8:17 pm |
Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director |
5,000 | $21.22 | $106,100 | 60,470 (Direct) |
View |
2021-11-11 Sale |
2021-11-12 7:44 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
7,813 | $21.67 | $169,308 | 187,789 (Indirect Direct) |
View |
2021-11-11 Sale |
2021-11-12 7:42 pm |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
10,000 | $21.33 | $213,300 | 125,489 (Direct) |
View |
2021-08-16 Sale |
2021-08-17 4:25 pm |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
6,589 | $19.35 | $127,524 | 105,689 (Direct) |
View |
2021-08-02 Sale |
2021-08-04 4:05 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
9,123 | $21.24 | $193,734 | 195,602 (Indirect Direct) |
View |
2021-08-02 Sale |
2021-08-03 4:06 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center |
8,932 | $21.14 | $188,805 | 56,536 (Indirect Direct) |
View |
2021-07-26 Sale |
2021-07-27 6:46 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
6,000 | $20.87 | $125,220 | 204,725 (Indirect Direct) |
View |
2021-07-20 Sale |
2021-07-22 4:13 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
5,187 | $20.57 | $106,697 | 210,725 (Indirect Direct) |
View |
2021-07-15 Sale |
2021-07-16 6:29 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center |
31,524 | $20.01 | $630,688 | 92,712 (Indirect Direct) |
View |
2021-07-07 Sale |
2021-07-08 6:32 pm |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
10,000 | $20.37 | $203,739 | 142,078 (Direct) |
View |
2021-06-08 Sale |
2021-06-10 4:45 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
12,912 | $19.43 | $250,829 | 190,912 (Indirect Direct) |
View |
2021-06-04 Sale |
2021-06-08 8:59 pm |
Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director |
10,000 | $18.74 | $187,351 | 67,361 (Direct) |
View |
2021-06-07 Sale |
2021-06-08 8:58 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director |
15,827 | $19.34 | $306,039 | 96,555 (Direct) |
View |
2021-06-07 Sale |
2021-06-08 8:56 pm |
Amphastar Pharmaceuticals Inc. | AMPH | Lee Howard Director |
15,827 | $19.3 | $305,449 | 164,115 (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 |
2022-03-15 Option Award |
2022-03-17 5:07 pm |
N/A 2032-03-15 |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
45,174 | $0 | 218,497 (Direct) |
View |
2022-03-15 Tax Withholding |
2022-03-17 5:07 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
1,652 | $34.74 | 218,497 (Direct) |
View |
2022-03-15 Option Award |
2022-03-17 5:05 pm |
N/A 2032-03-15 |
Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & Chief Scientific Officer 10% Owner |
361,571 | $0 | 10,983,944 (Direct) |
View |
2022-03-15 Tax Withholding |
2022-03-17 5:05 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & Chief Scientific Officer 10% Owner |
19,545 | $34.74 | 10,983,944 (Direct) |
View |
2022-03-07 Exercise |
2022-03-09 4:06 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
13,026 | $13.35 | 165,564 (Direct) |
View |
2022-03-07 Exercise |
2022-03-09 4:06 pm |
N/A 2027-03-16 |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
13,026 | $0 | 165,564 (Direct) |
View |
2022-02-25 Exercise |
2022-03-01 4:07 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
7,000 | $10.93 | 174,975 (Direct) |
View |
2022-02-25 Exercise |
2022-03-01 4:07 pm |
N/A 2023-07-30 |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
7,000 | $0 | 174,975 (Direct) |
View |
2022-02-25 Exercise |
2022-03-01 4:05 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
23,000 | $14.95 | 131,116 (Direct) |
View |
2022-02-25 Exercise |
2022-03-01 4:05 pm |
N/A 2025-03-26 |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
23,000 | $0 | 131,116 (Direct) |
View |
2022-02-08 Exercise |
2022-02-09 9:07 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
7,000 | $10.93 | 188,221 (Direct) |
View |
2022-02-08 Exercise |
2022-02-09 9:07 pm |
N/A 2023-07-30 |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
7,000 | $0 | 188,221 (Direct) |
View |
2022-02-08 Exercise |
2022-02-09 9:06 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
10,000 | $14.95 | 154,116 (Direct) |
View |
2022-02-08 Exercise |
2022-02-09 9:06 pm |
N/A 2025-03-26 |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
10,000 | $0 | 154,116 (Direct) |
View |
2022-01-10 Exercise |
2022-01-11 8:28 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
14,000 | $10.93 | 195,221 (Direct) |
View |
2022-01-10 Exercise |
2022-01-11 8:28 pm |
N/A 2023-07-30 |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
14,000 | $0 | 195,221 (Direct) |
View |
2022-01-07 Exercise |
2022-01-11 6:22 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
47,776 | $14.4 | 223,596 (Direct) |
View |
2022-01-07 Exercise |
2022-01-11 6:22 pm |
N/A 2024-04-21 |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
47,776 | $0 | 223,596 (Direct) |
View |
2021-12-30 Exercise |
2022-01-04 4:52 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
10,000 | $14.4 | 204,595 (Direct) |
View |
2021-12-30 Exercise |
2022-01-04 4:52 pm |
N/A 2024-04-21 |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
10,000 | $0 | 204,595 (Direct) |
View |
2021-12-21 Exercise |
2021-12-22 5:04 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
8,256 | $14.4 | 214,595 (Direct) |
View |
2021-12-21 Exercise |
2021-12-22 5:04 pm |
N/A 2024-04-21 |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
8,256 | $0 | 214,595 (Direct) |
View |
2021-12-16 Exercise |
2021-12-17 7:52 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
1,744 | $14.4 | 222,851 (Direct) |
View |
2021-12-16 Exercise |
2021-12-17 7:52 pm |
N/A 2024-04-21 |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
1,744 | $0 | 222,851 (Direct) |
View |
2021-12-10 Exercise |
2021-12-13 7:36 pm |
N/A 2022-06-08 |
Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director |
5,291 | $0 | 55,179 (Direct) |
View |
2021-12-10 Exercise |
2021-12-13 7:36 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director |
5,291 | $17.11 | 55,179 (Direct) |
View |
2021-11-22 Exercise |
2021-11-23 8:17 pm |
N/A 2022-06-08 |
Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director |
5,000 | $0 | 60,470 (Direct) |
View |
2021-11-22 Exercise |
2021-11-23 8:17 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director |
5,000 | $17.11 | 60,470 (Direct) |
View |
2021-11-11 Exercise |
2021-11-12 7:44 pm |
N/A 2022-11-07 |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
7,813 | $0 | 187,789 (Direct) |
View |
2021-11-11 Exercise |
2021-11-12 7:44 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
7,813 | $10.48 | 187,789 (Direct) |
View |
2021-11-11 Exercise |
2021-11-12 7:42 pm |
N/A 2026-03-17 |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
10,000 | $0 | 125,489 (Direct) |
View |
2021-11-11 Exercise |
2021-11-12 7:42 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
10,000 | $11.33 | 125,489 (Direct) |
View |
2021-08-02 Exercise |
2021-08-04 4:05 pm |
N/A 2022-11-07 |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
6,000 | $0 | 195,602 (Direct) |
View |
2021-08-02 Exercise |
2021-08-04 4:05 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
6,000 | $10.48 | 195,602 (Direct) |
View |
2021-08-02 Exercise |
2021-08-03 4:06 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center |
8,932 | $14.95 | 56,536 (Direct) |
View |
2021-08-02 Exercise |
2021-08-03 4:06 pm |
N/A 2025-03-26 |
Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center |
8,932 | $0 | 56,536 (Direct) |
View |
2021-07-26 Exercise |
2021-07-27 6:46 pm |
N/A 2022-11-07 |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
6,000 | $0 | 204,725 (Direct) |
View |
2021-07-26 Exercise |
2021-07-27 6:46 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
6,000 | $10.48 | 204,725 (Direct) |
View |
2021-07-20 Exercise |
2021-07-22 4:13 pm |
N/A 2022-11-07 |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
5,187 | $0 | 210,725 (Direct) |
View |
2021-07-20 Exercise |
2021-07-22 4:13 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
5,187 | $10.48 | 210,725 (Direct) |
View |
2021-07-15 Exercise |
2021-07-16 6:29 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center |
23,352 | $13.35 | 92,712 (Direct) |
View |
2021-07-15 Exercise |
2021-07-16 6:29 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center |
7,674 | $13.03 | 92,712 (Direct) |
View |
2021-07-15 Exercise |
2021-07-16 6:29 pm |
N/A 2027-03-16 |
Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center |
31,026 | $0 | 92,712 (Direct) |
View |
2021-07-07 Exercise |
2021-07-08 6:32 pm |
N/A 2026-03-17 |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
10,000 | $0 | 142,078 (Direct) |
View |
2021-07-07 Exercise |
2021-07-08 6:32 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer |
10,000 | $11.33 | 142,078 (Direct) |
View |
2021-06-14 Tax Withholding |
2021-06-15 4:20 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center |
128 | $19.68 | 57,034 (Direct) |
View |
2021-06-12 Tax Withholding |
2021-06-14 4:06 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Lee Howard Director |
157 | $19.92 | 138,776 (Direct) |
View |
2021-06-08 Exercise |
2021-06-10 4:45 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
8,180 | $14.23 | 190,912 (Direct) |
View |
2021-06-08 Exercise |
2021-06-10 4:45 pm |
N/A 2021-12-22 |
Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center |
8,180 | $0 | 190,912 (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 |
2021-06-04 Exercise |
2021-06-08 8:59 pm |
N/A 2021-06-09 |
Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director |
10,000 | $0 | 67,361 (Direct) |
View |
2021-06-04 Exercise |
2021-06-08 8:59 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director |
10,000 | $16.43 | 67,361 (Direct) |
View |
2021-06-07 Option Award |
2021-06-08 8:59 pm |
N/A 2029-06-07 |
Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director |
23,201 | $0 | 67,361 (Direct) |
View |
2021-06-07 Exercise |
2021-06-08 8:58 pm |
N/A 2021-06-09 |
Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director |
15,827 | $0 | 96,555 (Direct) |
View |
2021-06-07 Exercise |
2021-06-08 8:58 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director |
15,827 | $16.43 | 96,555 (Direct) |
View |
2021-06-07 Option Award |
2021-06-08 8:58 pm |
N/A 2029-06-07 |
Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director |
23,201 | $0 | 96,555 (Direct) |
View |
2021-06-07 Option Award |
2021-06-08 8:57 pm |
N/A 2029-06-07 |
Amphastar Pharmaceuticals Inc. | AMPH | Maris David Director |
23,201 | $0 | 36,352 (Direct) |
View |
2021-06-07 Exercise |
2021-06-08 8:56 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Lee Howard Director |
15,827 | $16.43 | 164,115 (Direct) |
View |
2021-06-07 Option Award |
2021-06-08 8:56 pm |
N/A 2029-06-07 |
Amphastar Pharmaceuticals Inc. | AMPH | Lee Howard Director |
23,201 | $0 | 164,115 (Direct) |
View |
2021-06-07 Option Award |
2021-06-08 8:55 pm |
N/A 2029-06-07 |
Amphastar Pharmaceuticals Inc. | AMPH | Koo Richard Director |
23,201 | $0 | 286,471 (Direct) |
View |
2021-06-07 Option Award |
2021-06-08 8:52 pm |
N/A 2029-06-07 |
Amphastar Pharmaceuticals Inc. | AMPH | Gerst Diane G. Director |
11,601 | $0 | 17,271 (Direct) |
View |
2021-06-07 Option Award |
2021-06-08 8:51 pm |
N/A 2029-06-07 |
Amphastar Pharmaceuticals Inc. | AMPH | Deflin Gayle Director |
23,201 | $0 | 23,201 (Direct) |
View |
2021-06-04 Tax Withholding |
2021-06-08 7:10 pm |
N/A N/A |
Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center |
264 | $18.79 | 57,162 (Direct) |
View |