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 |
| 2023-09-06 Sale | 2023-09-08 4:08 pm | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 60,743 | $51.75 | $3,143,195 | 211,988 (Direct) | View |
| 2023-08-28 Sale | 2023-08-29 6:54 pm | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 28,816 | $53.13 | $1,530,994 | 88,304 (Indirect Direct) | View |
| 2023-08-18 Sale | 2023-08-21 4:05 pm | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 2,000 | $52.5 | $105,006 | 40,895 (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 |
| 2023-08-15 Sale | 2023-08-16 8:22 pm | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 4,163 | $57.39 | $238,911 | 42,895 (Direct) | View |
| 2023-06-15 Sale | 2023-06-20 4:05 pm | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 5,000 | $51.79 | $258,947 | 229,081 (Indirect Direct) | View |
| 2023-06-15 Sale | 2023-06-20 4:01 pm | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 36,868 | $50.85 | $1,874,790 | 120,656 (Direct) | View |
| 2023-06-13 Sale | 2023-06-14 5:36 pm | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 5,000 | $48.24 | $241,200 | 210,872 (Indirect Direct) | View |
| 2023-06-02 Sale | 2023-06-05 5:06 pm | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 11,000 | $46.35 | $509,859 | 113,093 (Direct) | View |
| 2023-06-01 Sale | 2023-06-05 4:18 pm | Amphastar Pharmaceuticals Inc. | AMPH | Lee Howard Director | 16,679 | $45.02 | $750,960 | 142,939 (Direct) | View |
| 2023-05-18 Sale | 2023-05-22 6:49 pm | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 10,500 | $44.35 | $465,675 | 123,260 (Direct) | View |
| 2023-05-18 Sale | 2023-05-19 6:36 pm | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 10,000 | $44.2 | $442,050 | 215,157 (Indirect Direct) | View |
| 2023-05-18 Sale | 2023-05-19 6:30 pm | Amphastar Pharmaceuticals Inc. | AMPH | Deflin Gayle Director | 4,519 | $44.01 | $198,888 | 4,163 (Direct) | View |
| 2023-05-17 Sale | 2023-05-18 4:52 pm | Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director | 5,000 | $43.13 | $215,655 | 80,117 (Direct) | View |
| 2023-05-15 Sale | 2023-05-17 4:05 pm | Amphastar Pharmaceuticals Inc. | AMPH | Deflin Gayle Director | 1,500 | $43.15 | $64,728 | 8,682 (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 |
| 2023-05-12 Sale | 2023-05-16 7:59 pm | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 10,000 | $42.78 | $427,825 | 51,033 (Direct) | View |
| 2023-04-17 Sale | 2023-04-18 8:07 pm | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 5,632 | $42.35 | $238,515 | 134,138 (Direct) | View |
| 2023-04-13 Sale | 2023-04-14 5:50 pm | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 11,494 | $41.56 | $477,748 | 77,171 (Indirect Direct) | View |
| 2023-04-13 Sale | 2023-04-14 5:48 pm | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 4,868 | $42.35 | $206,160 | 139,770 (Direct) | View |
| 2023-04-10 Sale | 2023-04-12 5:22 pm | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 5,000 | $40 | $200,000 | 88,665 (Indirect Direct) | View |
| 2023-04-10 Sale | 2023-04-12 5:21 pm | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 10,032 | $40.35 | $404,791 | 144,638 (Direct) | View |
| 2023-04-03 Sale | 2023-04-04 7:12 pm | Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director | 491 | $37.72 | $18,519 | 85,117 (Direct) | View |
| 2023-03-15 Sale | 2023-03-17 7:03 pm | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 12,776 | $36.43 | $465,472 | 114,305 (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 |
| 2023-09-06 Exercise | 2023-09-08 4:08 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 25,250 | $13.03 | 211,988 (Direct) | View |
| 2023-09-06 Exercise | 2023-09-08 4:08 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 21,250 | $20.23 | 211,988 (Direct) | View |
| 2023-09-06 Exercise | 2023-09-08 4:08 pm | N/A 2028-03-15 | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 56,500 | $0 | 211,988 (Direct) | View |
| 2023-09-06 Exercise | 2023-09-08 4:08 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 10,000 | $19.79 | 211,988 (Direct) | View |
| 2023-08-28 Exercise | 2023-08-29 6:54 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 3,319 | $16.96 | 88,304 (Direct) | View |
| 2023-08-28 Exercise | 2023-08-29 6:54 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 20,000 | $13.03 | 88,304 (Direct) | View |
| 2023-08-28 Exercise | 2023-08-29 6:54 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 5,497 | $20.23 | 88,304 (Direct) | View |
| 2023-08-28 Exercise | 2023-08-29 6:54 pm | N/A 2028-06-14 | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 28,816 | $0 | 88,304 (Direct) | View |
| 2023-06-20 Exercise | 2023-06-21 5:05 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 9,651 | $11.33 | 241,796 (Direct) | View |
| 2023-06-20 Exercise | 2023-06-21 5:05 pm | N/A 2026-03-17 | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 9,651 | $0 | 241,796 (Direct) | View |
| 2023-06-15 Exercise | 2023-06-20 4:05 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 1,171 | $16.19 | 229,081 (Direct) | View |
| 2023-06-15 Exercise | 2023-06-20 4:05 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 4,631 | $14.95 | 229,081 (Direct) | View |
| 2023-06-15 Exercise | 2023-06-20 4:05 pm | N/A 2024-04-14 | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 19,377 | $0 | 229,081 (Direct) | View |
| 2023-06-15 Exercise | 2023-06-20 4:05 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 13,575 | $14.4 | 229,081 (Direct) | View |
| 2023-06-15 Exercise | 2023-06-20 4:01 pm | N/A 2028-03-15 | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 36,868 | $0 | 120,656 (Direct) | View |
| 2023-06-15 Exercise | 2023-06-20 4:01 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 36,868 | $19.79 | 120,656 (Direct) | View |
| 2023-06-13 Exercise | 2023-06-14 5:36 pm | N/A 2024-04-14 | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 5,000 | $0 | 210,872 (Direct) | View |
| 2023-06-13 Exercise | 2023-06-14 5:36 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 5,000 | $14.4 | 210,872 (Direct) | View |
| 2023-06-10 Tax Withholding | 2023-06-12 4:05 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Lee Howard Director | 375 | $45.67 | 145,280 (Direct) | View |
| 2023-06-05 Option Award | 2023-06-07 8:13 pm | N/A 2031-06-05 | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 9,732 | $0 | 54,074 (Direct) | View |
| 2023-06-05 Option Award | 2023-06-07 8:12 pm | N/A 2031-06-05 | Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director | 9,732 | $0 | 89,849 (Direct) | View |
| 2023-06-05 Option Award | 2023-06-07 6:24 pm | N/A 2031-06-05 | Amphastar Pharmaceuticals Inc. | AMPH | Gerst Diane G. Director | 9,732 | $0 | 22,574 (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 |
| 2023-06-05 Option Award | 2023-06-07 5:19 pm | N/A 2031-06-05 | Amphastar Pharmaceuticals Inc. | AMPH | Lee Howard Director | 9,732 | $0 | 152,671 (Direct) | View |
| 2023-06-05 Option Award | 2023-06-07 5:18 pm | N/A 2031-06-05 | Amphastar Pharmaceuticals Inc. | AMPH | Deflin Gayle Director | 9,732 | $0 | 13,895 (Direct) | View |
| 2023-06-04 Tax Withholding | 2023-06-06 6:49 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 378 | $46.7 | 72,128 (Direct) | View |
| 2023-06-02 Exercise | 2023-06-05 5:06 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 11,000 | $13.35 | 113,093 (Direct) | View |
| 2023-06-02 Exercise | 2023-06-05 5:06 pm | N/A 2027-03-16 | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 11,000 | $0 | 113,093 (Direct) | View |
| 2023-06-01 Exercise | 2023-06-05 4:18 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Lee Howard Director | 16,679 | $16.69 | 142,939 (Direct) | View |
| 2023-06-01 Exercise | 2023-06-05 4:18 pm | N/A 2026-06-07 | Amphastar Pharmaceuticals Inc. | AMPH | Lee Howard Director | 16,679 | $0 | 142,939 (Direct) | View |
| 2023-05-19 Tax Withholding | 2023-05-22 6:49 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 378 | $44.16 | 123,260 (Direct) | View |
| 2023-05-18 Exercise | 2023-05-22 6:49 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 10,500 | $13.35 | 123,260 (Direct) | View |
| 2023-05-18 Exercise | 2023-05-22 6:49 pm | N/A 2027-03-16 | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 10,500 | $0 | 123,260 (Direct) | View |
| 2023-05-18 Exercise | 2023-05-19 6:36 pm | N/A 2024-04-14 | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 10,000 | $0 | 215,157 (Direct) | View |
| 2023-05-18 Exercise | 2023-05-19 6:36 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 10,000 | $14.4 | 215,157 (Direct) | View |
| 2023-05-12 Exercise | 2023-05-16 7:59 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 10,000 | $16.69 | 51,033 (Direct) | View |
| 2023-05-12 Gift | 2023-05-16 7:59 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 3,000 | $0 | 51,033 (Direct) | View |
| 2023-05-12 Exercise | 2023-05-16 7:59 pm | N/A 2026-06-07 | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 10,000 | $0 | 51,033 (Direct) | View |
| 2023-04-17 Exercise | 2023-04-18 8:07 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 5,632 | $13.35 | 134,138 (Direct) | View |
| 2023-04-17 Exercise | 2023-04-18 8:07 pm | N/A 2027-03-16 | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 5,632 | $0 | 134,138 (Direct) | View |
| 2023-04-13 Exercise | 2023-04-14 5:50 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 11,494 | $20.23 | 77,171 (Direct) | View |
| 2023-04-13 Exercise | 2023-04-14 5:50 pm | N/A 2029-03-15 | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 11,494 | $0 | 77,171 (Direct) | View |
| 2023-04-13 Exercise | 2023-04-14 5:48 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 4,868 | $13.35 | 139,770 (Direct) | View |
| 2023-04-13 Exercise | 2023-04-14 5:48 pm | N/A 2027-03-16 | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 4,868 | $0 | 139,770 (Direct) | View |
| 2023-04-10 Exercise | 2023-04-12 5:22 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 5,000 | $20.23 | 88,665 (Direct) | View |
| 2023-04-10 Exercise | 2023-04-12 5:22 pm | N/A 2029-03-15 | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 5,000 | $0 | 88,665 (Direct) | View |
| 2023-04-10 Exercise | 2023-04-12 5:21 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 10,032 | $13.35 | 144,638 (Direct) | View |
| 2023-04-10 Exercise | 2023-04-12 5:21 pm | N/A 2027-03-16 | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 10,032 | $0 | 144,638 (Direct) | View |
| 2023-03-17 Tax Withholding | 2023-03-20 8:05 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 1,673 | $36.29 | 71,674 (Direct) | View |
| 2023-03-16 Tax Withholding | 2023-03-20 8:05 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 1,620 | $37.6 | 71,674 (Direct) | View |
| 2023-03-17 Tax Withholding | 2023-03-20 8:04 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 1,901 | $36.29 | 192,266 (Direct) | View |
| 2023-03-16 Tax Withholding | 2023-03-20 8:04 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 2,283 | $37.6 | 192,266 (Direct) | View |
| 2023-03-17 Tax Withholding | 2023-03-20 8:03 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 4,162 | $36.29 | 105,148 (Direct) | View |
| 2023-03-16 Tax Withholding | 2023-03-20 8:03 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 4,995 | $37.6 | 105,148 (Direct) | View |
| 2023-03-17 Tax Withholding | 2023-03-20 8:02 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & Chief Scientific Officer 10% Owner | 22,820 | $36.29 | 10,366,999 (Direct) | View |
| 2023-03-16 Gift | 2023-03-20 8:02 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & Chief Scientific Officer 10% Owner | 57,365 | $0 | 10,366,999 (Indirect) | View |
| 2023-03-16 Tax Withholding | 2023-03-20 8:02 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & Chief Scientific Officer 10% Owner | 35,239 | $37.6 | 10,366,999 (Direct) | View |
| 2023-03-15 Tax Withholding | 2023-03-17 7:07 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP Corp Admin Center | 1,851 | $36.84 | 74,967 (Direct) | View |
| 2023-03-15 Tax Withholding | 2023-03-17 7:04 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong EVP, Production Center | 2,057 | $36.84 | 196,450 (Direct) | View |
| 2023-03-15 Tax Withholding | 2023-03-17 7:03 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 4,146 | $36.84 | 114,305 (Direct) | View |
| 2023-03-15 Exercise | 2023-03-17 7:03 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 6,688 | $14.95 | 114,305 (Direct) | View |
| 2023-03-15 Exercise | 2023-03-17 7:03 pm | N/A 2025-03-26 | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & Treasurer | 6,688 | $0 | 114,305 (Direct) | View |
| 2023-03-15 Tax Withholding | 2023-03-17 7:01 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & Chief Scientific Officer 10% Owner | 11,237 | $36.84 | 10,539,788 (Direct) | View |