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 |
| 2025-04-01 Sale | 2025-04-02 6:45 pm | Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director | 500 | $28.38 | $14,190 | 73,909 (Direct) | View |
| 2025-03-06 Sale | 2025-03-07 4:01 pm | Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director | 1,000 | $27.99 | $27,986 | 74,409 (Direct) | View |
| 2025-03-04 Sale | 2025-03-06 5:00 pm | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 4,231 | $27.54 | $116,515 | 95,624 (Direct) | View |
| 2024-12-12 Sale | 2024-12-16 5:22 pm | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 15,000 | $44.85 | $672,815 | 250,711 (Indirect Direct) | View |
| 2024-12-09 Sale | 2024-12-11 8:28 pm | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 10,000 | $43.77 | $437,702 | 30,061 (Direct) | View |
| 2024-11-12 Sale | 2024-11-13 8:26 pm | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 6,893 | $48.88 | $336,930 | 223,056 (Indirect Direct) | View |
| 2024-11-12 Sale | 2024-11-13 6:55 pm | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 5,000 | $48.8 | $243,986 | 34,650 (Direct) | View |
| 2024-11-06 Sale | 2024-11-08 7:02 pm | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP CORP ADMIN CENTER | 5,214 | $52.05 | $271,389 | 88,359 (Indirect Direct) | View |
| 2024-11-06 Sale | 2024-11-08 5:24 pm | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 7,426 | $52.05 | $386,523 | 117,777 (Direct) | View |
| 2024-09-13 Sale | 2024-09-17 4:11 pm | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 3,000 | $48.26 | $144,785 | 229,949 (Indirect Direct) | View |
| 2024-09-05 Sale | 2024-09-06 7:48 pm | Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director | 3,000 | $46.47 | $139,417 | 75,409 (Direct) | View |
| 2024-08-26 Sale | 2024-08-27 9:33 pm | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 4,000 | $48.35 | $193,400 | 232,949 (Indirect Direct) | View |
| 2024-08-12 Sale | 2024-08-13 5:58 pm | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 17,101 | $43.07 | $736,550 | 63,971 (Direct) | View |
| 2024-07-31 Sale | 2024-08-02 4:32 pm | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 10,282 | $44.23 | $454,773 | 99,046 (Direct) | View |
| 2024-06-27 Sale | 2024-06-28 4:26 pm | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 3,596 | $40.93 | $147,169 | 94,103 (Direct) | View |
| 2024-06-10 Sale | 2024-06-11 6:32 pm | Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director | 3,000 | $41.4 | $124,200 | 78,409 (Direct) | View |
| 2024-06-03 Sale | 2024-06-05 6:54 pm | Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director | 500 | $42.65 | $21,326 | 88,273 (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 |
| 2025-03-17 Tax Withholding | 2025-03-18 7:43 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 1,967 | $27.69 | 242,165 (Direct) | View |
| 2025-03-15 Tax Withholding | 2025-03-18 7:43 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 1,222 | $26.66 | 242,165 (Direct) | View |
| 2025-03-17 Tax Withholding | 2025-03-18 7:13 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & CHIEF SCIENTIFIC OFFICER 10% Owner | 23,373 | $27.69 | 10,660,813 (Direct) | View |
| 2025-03-14 Tax Withholding | 2025-03-18 7:13 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & CHIEF SCIENTIFIC OFFICER 10% Owner | 402,822 | $26.66 | 10,660,813 (Direct) | View |
| 2025-03-14 Exercise | 2025-03-18 7:13 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & CHIEF SCIENTIFIC OFFICER 10% Owner | 501,690 | $14.69 | 10,660,813 (Direct) | View |
| 2025-03-14 Exercise | 2025-03-18 7:13 pm | N/A 2025-03-16 | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & CHIEF SCIENTIFIC OFFICER 10% Owner | 501,690 | $0 | 10,660,813 (Direct) | View |
| 2025-03-17 Tax Withholding | 2025-03-18 6:41 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP CORP ADMIN CENTER | 1,731 | $27.69 | 93,368 (Direct) | View |
| 2025-03-15 Tax Withholding | 2025-03-18 6:41 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP CORP ADMIN CENTER | 1,031 | $26.66 | 93,368 (Direct) | View |
| 2025-03-17 Tax Withholding | 2025-03-18 6:38 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 3,004 | $27.69 | 125,258 (Direct) | View |
| 2025-03-15 Tax Withholding | 2025-03-18 6:38 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 1,968 | $26.66 | 125,258 (Direct) | View |
| 2025-03-10 Option Award | 2025-03-12 4:53 pm | N/A 2035-03-10 | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 77,129 | $0 | 297,791 (Direct) | View |
| 2025-03-10 Option Award | 2025-03-12 4:16 pm | N/A 2035-03-10 | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP CORP ADMIN CENTER | 65,090 | $0 | 140,383 (Direct) | View |
| 2025-03-10 Option Award | 2025-03-12 4:14 pm | N/A 2035-03-10 | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 114,786 | $0 | 208,269 (Direct) | View |
| 2025-03-10 Option Award | 2025-03-12 4:03 pm | N/A 2035-03-10 | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & CHIEF SCIENTIFIC OFFICER 10% Owner | 516,095 | $0 | 10,936,191 (Direct) | View |
| 2025-03-06 Tax Withholding | 2025-03-10 6:10 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 1,354 | $28.32 | 220,662 (Direct) | View |
| 2025-03-06 Tax Withholding | 2025-03-10 5:29 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 2,141 | $28.32 | 93,483 (Direct) | View |
| 2025-03-06 Tax Withholding | 2025-03-10 4:05 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP CORP ADMIN CENTER | 1,141 | $28.32 | 75,293 (Direct) | View |
| 2025-03-06 Tax Withholding | 2025-03-10 4:04 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & CHIEF SCIENTIFIC OFFICER 10% Owner | 12,714 | $28.32 | 10,420,096 (Direct) | View |
| 2025-03-04 Tax Withholding | 2025-03-06 5:00 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 1,739 | $27.62 | 95,624 (Direct) | View |
| 2025-03-04 Exercise | 2025-03-06 5:00 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 7,490 | $13.35 | 95,624 (Direct) | View |
| 2025-03-04 Exercise | 2025-03-06 5:00 pm | N/A 2027-03-16 | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 7,490 | $0 | 95,624 (Direct) | View |
| 2025-03-04 Tax Withholding | 2025-03-06 4:22 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 1,121 | $27.62 | 222,016 (Direct) | View |
| 2025-03-04 Tax Withholding | 2025-03-06 4:20 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP CORP ADMIN CENTER | 963 | $27.62 | 76,434 (Direct) | View |
| 2025-03-04 Tax Withholding | 2025-03-06 4:16 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & CHIEF SCIENTIFIC OFFICER 10% Owner | 8,179 | $27.62 | 10,432,810 (Direct) | View |
| 2024-12-12 Exercise | 2024-12-16 5:22 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 15,000 | $11.33 | 250,711 (Direct) | View |
| 2024-12-12 Exercise | 2024-12-16 5:22 pm | N/A 2026-03-17 | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 15,000 | $0 | 250,711 (Direct) | View |
| 2024-12-09 Gift | 2024-12-11 8:28 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 410 | $0 | 30,061 (Direct) | View |
| 2024-12-09 Exercise | 2024-12-11 8:28 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 10,000 | $19.52 | 30,061 (Direct) | View |
| 2024-12-09 Exercise | 2024-12-11 8:28 pm | N/A 2029-06-07 | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 10,000 | $0 | 30,061 (Direct) | View |
| 2024-11-12 Exercise | 2024-11-13 8:26 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 6,893 | $14.95 | 223,056 (Direct) | View |
| 2024-11-12 Exercise | 2024-11-13 8:26 pm | N/A 2025-03-26 | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 6,893 | $0 | 223,056 (Direct) | View |
| 2024-11-12 Gift | 2024-11-13 6:55 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 1,000 | $0 | 34,650 (Direct) | View |
| 2024-11-12 Exercise | 2024-11-13 6:55 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 2,500 | $16.69 | 34,650 (Direct) | View |
| 2024-11-12 Exercise | 2024-11-13 6:55 pm | N/A 2026-06-07 | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 2,500 | $0 | 34,650 (Direct) | View |
| 2024-11-11 Gift | 2024-11-12 8:05 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & CHIEF SCIENTIFIC OFFICER 10% Owner | 125,000 | $0 | 10,440,989 (Direct) | View |
| 2024-11-06 Exercise | 2024-11-08 7:02 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP CORP ADMIN CENTER | 5,214 | $13.03 | 88,359 (Direct) | View |
| 2024-11-06 Exercise | 2024-11-08 7:02 pm | N/A 2030-03-16 | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP CORP ADMIN CENTER | 5,214 | $0 | 88,359 (Direct) | View |
| 2024-11-06 Exercise | 2024-11-08 5:24 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 7,426 | $13.03 | 117,777 (Direct) | View |
| 2024-11-06 Exercise | 2024-11-08 5:24 pm | N/A 2030-03-16 | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 7,426 | $0 | 117,777 (Direct) | View |
| 2024-09-13 Exercise | 2024-09-17 4:11 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 3,000 | $14.95 | 229,949 (Direct) | View |
| 2024-09-13 Exercise | 2024-09-17 4:11 pm | N/A 2025-03-26 | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 3,000 | $0 | 229,949 (Direct) | View |
| 2024-09-13 Exercise | 2024-09-16 7:09 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & CHIEF SCIENTIFIC OFFICER 10% Owner | 100,000 | $14.69 | 10,981,466 (Direct) | View |
| 2024-09-13 Exercise | 2024-09-16 7:09 pm | N/A 2025-03-16 | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & CHIEF SCIENTIFIC OFFICER 10% Owner | 100,000 | $0 | 10,981,466 (Direct) | View |
| 2024-08-26 Exercise | 2024-08-27 9:33 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 4,000 | $14.95 | 232,949 (Direct) | View |
| 2024-08-26 Exercise | 2024-08-27 9:33 pm | N/A 2025-03-26 | Amphastar Pharmaceuticals Inc. | AMPH | Zhou Rong SENIOR EVP, PRODUCTION CENTER | 4,000 | $0 | 232,949 (Direct) | View |
| 2024-08-12 Exercise | 2024-08-13 5:58 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 6,004 | $20.08 | 63,971 (Direct) | View |
| 2024-08-12 Exercise | 2024-08-13 5:58 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 7,182 | $19.52 | 63,971 (Direct) | View |
| 2024-08-12 Exercise | 2024-08-13 5:58 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 3,915 | $20.03 | 63,971 (Direct) | View |
| 2024-08-12 Exercise | 2024-08-13 5:58 pm | N/A 2027-06-12 | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 17,101 | $0 | 63,971 (Direct) | View |
| 2024-07-31 Exercise | 2024-08-02 4:32 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 10,282 | $20.23 | 99,046 (Direct) | View |
| 2024-07-31 Exercise | 2024-08-02 4:32 pm | N/A 2029-03-15 | Amphastar Pharmaceuticals Inc. | AMPH | PETERS WILLIAM J CFO, EVP & TREASURER | 10,282 | $0 | 99,046 (Direct) | View |
| 2024-06-10 Exercise | 2024-06-11 6:35 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & CHIEF SCIENTIFIC OFFICER 10% Owner | 100,000 | $14.69 | 10,981,466 (Direct) | View |
| 2024-06-10 Exercise | 2024-06-11 6:35 pm | N/A 2025-03-16 | Amphastar Pharmaceuticals Inc. | AMPH | Zhang Jack Y. Luo Mary Z. CEO & CHIEF SCIENTIFIC OFFICER 10% Owner | 100,000 | $0 | 10,981,466 (Direct) | View |
| 2024-06-05 Tax Withholding | 2024-06-05 8:10 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Lee Howard Director | 579 | $42.04 | 154,641 (Direct) | View |
| 2024-06-03 Option Award | 2024-06-05 8:10 pm | N/A 2034-06-03 | Amphastar Pharmaceuticals Inc. | AMPH | Lee Howard Director | 9,940 | $0 | 154,641 (Direct) | View |
| 2024-06-03 Option Award | 2024-06-05 7:03 pm | N/A 2034-06-03 | Amphastar Pharmaceuticals Inc. | AMPH | Gerst Diane G. Director | 9,940 | $0 | 25,498 (Direct) | View |
| 2024-06-03 Option Award | 2024-06-05 6:56 pm | N/A 2034-06-03 | Amphastar Pharmaceuticals Inc. | AMPH | Deflin Gayle Director | 9,940 | $0 | 12,656 (Direct) | View |
| 2024-06-03 Option Award | 2024-06-05 6:54 pm | N/A 2034-06-03 | Amphastar Pharmaceuticals Inc. | AMPH | Petersen Floyd F. Director | 9,940 | $0 | 88,273 (Direct) | View |
| 2024-06-04 Tax Withholding | 2024-06-05 6:00 pm | N/A N/A | Amphastar Pharmaceuticals Inc. | AMPH | Liawatidewi Yakob EVP CORP ADMIN CENTER | 272 | $42.22 | 77,397 (Direct) | View |
| 2024-06-03 Option Award | 2024-06-05 5:58 pm | N/A 2034-06-03 | Amphastar Pharmaceuticals Inc. | AMPH | PRINS RICHARD K Director | 9,940 | $0 | 40,835 (Direct) | View |