AMPHASTAR PHARMACEUTICALS IN (AMPH)
US03209R1032 - Common Stock
| Shares Outstanding | 48.10M |
| Float | 37.50M |
| Owners (insider) | 12.06% |
| Owners (institutional) | 69.47% |
| Owners (insider) change | -0.24% |
| Owners (institutional) change | -0.06% |
Insider Transactions
Top Institutional Holders
Insider Owners
| Date | Name | Type | Shares | Price | Amount |
|---|---|---|---|---|---|
| Apr 1, 2024 | Petersen Floyd F. | Open Market Sale | 500 | 43.43 | $ 21,714.15 |
| Mar 15, 2024 | Liawatidewi Yakob | Option Excercise | 4424 | 43.05 | $ 190,453.20 |
| Mar 15, 2024 | Zhou Rong | Option Excercise | 5535 | 43.05 | $ 238,281.75 |
| Mar 15, 2024 | PETERS WILLIAM J | Option Excercise | 11645 | 43.05 | $ 501,317.25 |
| Mar 15, 2024 | Zhang Jack Y. | Option Excercise | 1032976 | 12.46 | $ 12,870,880.96 |
| Mar 15, 2024 | Luo Mary Z. | Option Excercise | 1032976 | 12.46 | $ 12,870,880.96 |
| Mar 15, 2024 | Zhang Jack Y. | Option Excercise | 634199 | 43.05 | $ 27,302,266.95 |
| Mar 15, 2024 | Luo Mary Z. | Option Excercise | 634199 | 43.05 | $ 27,302,266.95 |
| Mar 6, 2024 | Zhou Rong | Option Excercise | 1390 | 46.31 | $ 64,370.90 |
| Mar 6, 2024 | PETERS WILLIAM J | Option Excercise | 8826 | 11.33 | $ 99,998.58 |
| Mar 6, 2024 | PETERS WILLIAM J | Open Market Sale | 18136 | 46.48 | $ 842,883.11 |
| Mar 6, 2024 | PETERS WILLIAM J | Option Excercise | 2190 | 46.31 | $ 101,418.90 |
| Mar 6, 2024 | Zhang Jack Y. | Option Excercise | 10021 | 46.31 | $ 464,072.51 |
| Mar 6, 2024 | Luo Mary Z. | Option Excercise | 10021 | 46.31 | $ 464,072.51 |
| Mar 6, 2024 | Liawatidewi Yakob | Option Excercise | 1221 | 46.31 | $ 56,544.51 |
| Mar 5, 2024 | ZASLOFF MICHAEL A | Open Market Sale | 12500 | 47.18 | $ 589,724.14 |
| Mar 4, 2024 | Liawatidewi Yakob | Grant | 10754 | 0.00 | $ 0.00 |
| Mar 4, 2024 | Zhou Rong | Grant | 12521 | 0.00 | $ 0.00 |
| Mar 4, 2024 | PETERS WILLIAM J | Grant | 19440 | 0.00 | $ 0.00 |
| Mar 4, 2024 | Zhang Jack Y. | Grant | 91420 | 0.00 | $ 0.00 |
| Mar 4, 2024 | Luo Mary Z. | Grant | 91420 | 0.00 | $ 0.00 |
| Mar 1, 2024 | Petersen Floyd F. | Open Market Sale | 500 | 45.69 | $ 22,847.34 |
| Feb 1, 2024 | Petersen Floyd F. | Open Market Sale | 500 | 53.10 | $ 26,548.40 |
| Jan 10, 2024 | Luo Mary Z. | Open Market Sale | 131386 | 54.59 | $ 7,171,767.74 |
| Jan 10, 2024 | Zhang Jack Y. | Open Market Sale | 131386 | 54.59 | $ 7,171,767.74 |
| Jan 8, 2024 | Luo Mary Z. | Open Market Sale | 219800 | 58.23 | $ 12,798,708.11 |
| Jan 8, 2024 | Zhang Jack Y. | Open Market Sale | 219800 | 58.23 | $ 12,798,708.11 |
| Jan 2, 2024 | Petersen Floyd F. | Open Market Sale | 500 | 61.37 | $ 30,682.93 |
| Dec 1, 2023 | Petersen Floyd F. | Open Market Sale | 500 | 57.90 | $ 28,952.21 |
| Dec 1, 2023 | Zhou Rong | Option Excercise | 7830 | 15.20 | $ 119,042.06 |
| Dec 1, 2023 | Zhou Rong | Open Market Sale | 7830 | 59.03 | $ 462,195.40 |
| Nov 14, 2023 | Deflin Gayle | Open Market Sale | 4163 | 55.45 | $ 230,838.35 |
| Nov 14, 2023 | PETERS WILLIAM J | Option Excercise | 59250 | 15.61 | $ 925,027.50 |
| Nov 14, 2023 | PETERS WILLIAM J | Open Market Sale | 59250 | 55.67 | $ 3,298,474.68 |
| Nov 13, 2023 | PRINS RICHARD K | Open Market Sale | 5000 | 52.50 | $ 262,500.00 |
| Nov 1, 2023 | Petersen Floyd F. | Open Market Sale | 500 | 45.30 | $ 22,651.05 |
| Oct 2, 2023 | Petersen Floyd F. | Open Market Sale | 500 | 45.78 | $ 22,889.55 |
| Sep 6, 2023 | PETERS WILLIAM J | Option Excercise | 56500 | 16.93 | $ 956,795.00 |
| Sep 6, 2023 | PETERS WILLIAM J | Open Market Sale | 60743 | 51.75 | $ 3,143,195.16 |
| Aug 28, 2023 | Liawatidewi Yakob | Option Excercise | 28816 | 14.86 | $ 428,094.55 |
| Aug 28, 2023 | Liawatidewi Yakob | Open Market Sale | 28816 | 53.13 | $ 1,530,994.08 |
| Aug 18, 2023 | PRINS RICHARD K | Open Market Sale | 2000 | 52.50 | $ 105,005.60 |
| Aug 15, 2023 | ZASLOFF MICHAEL A | Open Market Sale | 12759 | 57.22 | $ 730,025.32 |
| Aug 15, 2023 | PRINS RICHARD K | Open Market Sale | 4163 | 57.39 | $ 238,911.24 |
| Jun 20, 2023 | Zhou Rong | Option Excercise | 9651 | 11.33 | $ 109,345.83 |
| Jun 15, 2023 | Zhou Rong | Option Excercise | 19377 | 14.64 | $ 283,671.94 |
| Jun 15, 2023 | Zhou Rong | Open Market Sale | 5000 | 51.79 | $ 258,946.50 |
| Jun 15, 2023 | PETERS WILLIAM J | Option Excercise | 36868 | 19.79 | $ 729,617.72 |
| Jun 15, 2023 | PETERS WILLIAM J | Open Market Sale | 36868 | 50.85 | $ 1,874,789.72 |
| Jun 13, 2023 | Zhou Rong | Option Excercise | 5000 | 14.40 | $ 72,000.00 |
| Jun 13, 2023 | Zhou Rong | Open Market Sale | 5000 | 48.24 | $ 241,200.00 |
| Jun 10, 2023 | Lee Howard | Option Excercise | 375 | 45.67 | $ 17,126.25 |
| Jun 5, 2023 | Lee Howard | Grant | 2716 | 0.00 | $ 0.00 |
| Jun 5, 2023 | Deflin Gayle | Grant | 2716 | 0.00 | $ 0.00 |
| Jun 5, 2023 | ZASLOFF MICHAEL A | Grant | 2716 | 0.00 | $ 0.00 |
| Jun 5, 2023 | Gerst Diane G. | Grant | 2716 | 0.00 | $ 0.00 |
| Jun 5, 2023 | PRINS RICHARD K | Grant | 2716 | 0.00 | $ 0.00 |
| Jun 5, 2023 | Petersen Floyd F. | Grant | 2716 | 0.00 | $ 0.00 |
| Jun 4, 2023 | Liawatidewi Yakob | Option Excercise | 378 | 46.70 | $ 17,652.60 |
| Jun 2, 2023 | PETERS WILLIAM J | Option Excercise | 11000 | 13.35 | $ 146,850.00 |
| Jun 2, 2023 | PETERS WILLIAM J | Open Market Sale | 11000 | 46.35 | $ 509,858.80 |
| Jun 1, 2023 | Lee Howard | Option Excercise | 16679 | 16.69 | $ 278,372.51 |
| Jun 1, 2023 | Lee Howard | Open Market Sale | 16679 | 45.02 | $ 750,960.30 |
| May 19, 2023 | PETERS WILLIAM J | Option Excercise | 378 | 44.16 | $ 16,692.48 |
| May 18, 2023 | Zhou Rong | Option Excercise | 10000 | 14.40 | $ 144,000.00 |
| May 18, 2023 | Zhou Rong | Open Market Sale | 10000 | 44.21 | $ 442,050.00 |
| May 18, 2023 | Deflin Gayle | Open Market Sale | 4519 | 44.01 | $ 198,888.42 |
| May 18, 2023 | PETERS WILLIAM J | Option Excercise | 10500 | 13.35 | $ 140,175.00 |
| May 18, 2023 | PETERS WILLIAM J | Open Market Sale | 10500 | 44.35 | $ 465,675.00 |
| May 17, 2023 | Petersen Floyd F. | Open Market Sale | 5000 | 43.13 | $ 215,655.00 |
| May 15, 2023 | ZASLOFF MICHAEL A | Open Market Sale | 7500 | 42.18 | $ 316,335.00 |
| May 15, 2023 | Deflin Gayle | Open Market Sale | 1500 | 43.15 | $ 64,727.70 |
| May 12, 2023 | PRINS RICHARD K | Option Excercise | 10000 | 16.69 | $ 166,900.00 |
| May 12, 2023 | PRINS RICHARD K | Open Market Sale | 10000 | 42.78 | $ 427,824.50 |
| May 12, 2023 | PRINS RICHARD K | Other Disposition | 3000 | 0.00 | $ 0.00 |