Amphastar Pharmaceuticals, Inc.

Zhou Rong sold 3,187 shares of AMPH on 2 September. They now own 169,203 AMPH shares.

Prins Richard K sold 7,973 shares of AMPH on 11 August. They now own 29,625 AMPH shares.

Peters William J sold 5,053 shares of AMPH on 7 August. They now own 0 AMPH shares.

Peters William J bought 5,053 shares of AMPH on 7 August. They now own 181,026 AMPH shares.

Peters William J sold 8,180 shares of AMPH on 7 August. They now own 172,846 AMPH shares.

Pierce Anthony T bought 7,886 shares of AMPH on 9 July. They now own 7,886 AMPH shares.

Pierce Anthony T bought 0 shares of AMPH on 9 July. They now own 0 AMPH shares.

Pierce Anthony T bought 16,646 shares of AMPH on 9 July. They now own 16,646 AMPH shares.

Lee Howard sold 769 shares of AMPH on 2 June. They now own 159,350 AMPH shares.

Deflin Gayle bought 8,143 shares of AMPH on 1 June. They now own 19,057 AMPH shares.

Gaugh David Russell bought 17,365 shares of AMPH on 1 June. They now own 17,365 AMPH shares.

Gaugh David Russell bought 8,143 shares of AMPH on 1 June. They now own 14,447 AMPH shares.

Zasloff Michael A bought 8,143 shares of AMPH on 1 June. They now own 37,667 AMPH shares.

Deflin Gayle bought 17,365 shares of AMPH on 1 June. They now own 17,365 AMPH shares.

Gerst Diane G. bought 17,365 shares of AMPH on 1 June. They now own 17,365 AMPH shares.

Zasloff Michael A bought 17,365 shares of AMPH on 1 June. They now own 17,365 AMPH shares.

Prins Richard K bought 17,365 shares of AMPH on 1 June. They now own 17,365 AMPH shares.

Lee Howard bought 8,143 shares of AMPH on 1 June. They now own 160,119 AMPH shares.

Lee Howard bought 17,365 shares of AMPH on 1 June. They now own 17,365 AMPH shares.

Prins Richard K bought 8,143 shares of AMPH on 1 June. They now own 37,598 AMPH shares.

Gerst Diane G. bought 8,143 shares of AMPH on 1 June. They now own 31,899 AMPH shares.

Zhang Jack Y. sold 9,784 shares of AMPH on 15 March. They now own 2,990,052 AMPH shares.

Peters William J sold 1,973 shares of AMPH on 15 March. They now own 175,063 AMPH shares.

Liawatidewi Yakob sold 1,033 shares of AMPH on 15 March. They now own 121,892 AMPH shares.

Zhang Jack Y. sold 2,908 shares of AMPH on 15 March. They now own 1,245,125 AMPH shares.

Zhou Rong sold 1,225 shares of AMPH on 15 March. They now own 171,554 AMPH shares.

Zhang Jack Y. sold 4,395 shares of AMPH on 10 March. They now own 1,248,033 AMPH shares.

Zhang Jack Y. sold 14,785 shares of AMPH on 10 March. They now own 2,999,836 AMPH shares.

Peters William J sold 3,297 shares of AMPH on 10 March. They now own 177,036 AMPH shares.

Liawatidewi Yakob sold 1,870 shares of AMPH on 10 March. They now own 122,925 AMPH shares.

Zhou Rong sold 2,215 shares of AMPH on 10 March. They now own 172,779 AMPH shares.

Zhou Rong bought 81,341 shares of AMPH on 9 March. They now own 81,341 AMPH shares.

Liawatidewi Yakob bought 73,126 shares of AMPH on 9 March. They now own 73,126 AMPH shares.

Zhang Jack Y. bought 149,472 shares of AMPH on 9 March. They now own 149,472 AMPH shares.

Peters William J bought 58,693 shares of AMPH on 9 March. They now own 180,333 AMPH shares.

Zhang Jack Y. bought 180,504 shares of AMPH on 9 March. They now own 3,014,621 AMPH shares.

Peters William J bought 121,071 shares of AMPH on 9 March. They now own 121,071 AMPH shares.

Liawatidewi Yakob bought 35,450 shares of AMPH on 9 March. They now own 124,795 AMPH shares.

Zhang Jack Y. bought 72,462 shares of AMPH on 9 March. They now own 1,252,428 AMPH shares.

Zhou Rong bought 39,432 shares of AMPH on 9 March. They now own 174,994 AMPH shares.

Zhang Jack Y. bought 372,338 shares of AMPH on 9 March. They now own 372,338 AMPH shares.

Liawatidewi Yakob sold 1,144 shares of AMPH on 6 March. They now own 89,345 AMPH shares.

Zhang Jack Y. sold 7,773 shares of AMPH on 6 March. They now own 2,834,117 AMPH shares.

Zhang Jack Y. sold 3,077 shares of AMPH on 6 March. They now own 1,179,966 AMPH shares.

Zhou Rong sold 1,357 shares of AMPH on 6 March. They now own 135,562 AMPH shares.

Peters William J sold 2,146 shares of AMPH on 6 March. They now own 121,640 AMPH shares.

Zhou Rong sold 1,124 shares of AMPH on 4 March. They now own 136,919 AMPH shares.

Zhang Jack Y. sold 2,432 shares of AMPH on 4 March. They now own 1,183,043 AMPH shares.

Zhang Jack Y. sold 5,769 shares of AMPH on 4 March. They now own 2,841,890 AMPH shares.

Peters William J sold 1,744 shares of AMPH on 4 March. They now own 123,786 AMPH shares.

Liawatidewi Yakob sold 965 shares of AMPH on 4 March. They now own 90,489 AMPH shares.

Zhou Rong sold 9,787 shares of AMPH on 17 December. They now own 0 AMPH shares.

Zhou Rong bought 9,787 shares of AMPH on 17 December. They now own 147,830 AMPH shares.

Zhou Rong sold 9,787 shares of AMPH on 17 December. They now own 138,043 AMPH shares.

Petersen Floyd F. sold 2,426 shares of AMPH on 12 December. They now own 71,368 AMPH shares.

Petersen Floyd F. sold 1,737 shares of AMPH on 11 December. They now own 73,794 AMPH shares.

Prins Richard K bought 4,179 shares of AMPH on 25 November. They now own 39,362 AMPH shares.

Prins Richard K sold 4,179 shares of AMPH on 25 November. They now own 35,183 AMPH shares.

Prins Richard K sold 4,179 shares of AMPH on 25 November. They now own 0 AMPH shares.

Petersen Floyd F. bought 16,679 shares of AMPH on 13 November. They now own 92,210 AMPH shares.

Petersen Floyd F. sold 16,679 shares of AMPH on 13 November. They now own 75,531 AMPH shares.

Petersen Floyd F. sold 16,679 shares of AMPH on 13 November. They now own 0 AMPH shares.

Petersen Floyd F. sold 500 shares of AMPH on 3 November. They now own 75,531 AMPH shares.

Petersen Floyd F. sold 500 shares of AMPH on 1 October. They now own 76,031 AMPH shares.

Petersen Floyd F. sold 500 shares of AMPH on 2 September. They now own 76,531 AMPH shares.

Petersen Floyd F. sold 500 shares of AMPH on 1 August. They now own 77,031 AMPH shares.

Gaugh David Russell bought 13,987 shares of AMPH on 18 July. They now own 13,987 AMPH shares.

Gaugh David Russell bought 0 shares of AMPH on 18 July. They now own 0 AMPH shares.

Gaugh David Russell bought 6,304 shares of AMPH on 18 July. They now own 6,304 AMPH shares.

Petersen Floyd F. sold 500 shares of AMPH on 2 July. They now own 77,531 AMPH shares.

Zhang Jack Y. sold 200,000 shares of AMPH on 13 June. They now own 205,003 AMPH shares.

Zhang Jack Y. bought 200,000 shares of AMPH on 13 June. They now own 2,847,659 AMPH shares.

Lee Howard sold 923 shares of AMPH on 3 June. They now own 151,976 AMPH shares.

Lee Howard bought 11,402 shares of AMPH on 2 June. They now own 11,402 AMPH shares.

Zasloff Michael A bought 5,122 shares of AMPH on 2 June. They now own 29,524 AMPH shares.

Prins Richard K bought 11,402 shares of AMPH on 2 June. They now own 11,402 AMPH shares.

Petersen Floyd F. sold 500 shares of AMPH on 2 June. They now own 72,909 AMPH shares.

Deflin Gayle bought 5,122 shares of AMPH on 2 June. They now own 10,914 AMPH shares.

Gerst Diane G. bought 11,402 shares of AMPH on 2 June. They now own 11,402 AMPH shares.

Zasloff Michael A bought 11,402 shares of AMPH on 2 June. They now own 11,402 AMPH shares.

Lee Howard bought 5,122 shares of AMPH on 2 June. They now own 152,899 AMPH shares.

Prins Richard K bought 5,122 shares of AMPH on 2 June. They now own 35,183 AMPH shares.

Deflin Gayle bought 11,402 shares of AMPH on 2 June. They now own 11,402 AMPH shares.

Gerst Diane G. bought 5,122 shares of AMPH on 2 June. They now own 23,756 AMPH shares.

Petersen Floyd F. bought 5,122 shares of AMPH on 2 June. They now own 78,031 AMPH shares.

Petersen Floyd F. bought 11,402 shares of AMPH on 2 June. They now own 11,402 AMPH shares.

Peters William J sold 273 shares of AMPH on 19 May. They now own 124,985 AMPH shares.

Petersen Floyd F. sold 500 shares of AMPH on 1 May. They now own 73,409 AMPH shares.

Petersen Floyd F. sold 500 shares of AMPH on 1 April. They now own 73,909 AMPH shares.

Liawatidewi Yakob sold 1,731 shares of AMPH on 17 March. They now own 90,909 AMPH shares.

Zhou Rong sold 1,967 shares of AMPH on 17 March. They now own 137,497 AMPH shares.

Zhang Jack Y. sold 16,150 shares of AMPH on 17 March. They now own 2,647,659 AMPH shares.

Zhang Jack Y. sold 7,223 shares of AMPH on 17 March. They now own 1,185,475 AMPH shares.

Peters William J sold 3,004 shares of AMPH on 17 March. They now own 125,258 AMPH shares.

Peters William J sold 1,968 shares of AMPH on 15 March. They now own 128,262 AMPH shares.

Zhang Jack Y. sold 9,765 shares of AMPH on 15 March. They now own 2,663,809 AMPH shares.

Zhang Jack Y. sold 4,115 shares of AMPH on 15 March. They now own 1,192,698 AMPH shares.

Liawatidewi Yakob sold 1,031 shares of AMPH on 15 March. They now own 92,640 AMPH shares.

Zhou Rong sold 1,222 shares of AMPH on 15 March. They now own 139,464 AMPH shares.

Zhang Jack Y. sold 226,285 shares of AMPH on 14 March. They now own 2,673,574 AMPH shares.

Zhang Jack Y. sold 211,213 shares of AMPH on 14 March. They now own 0 AMPH shares.

Zhang Jack Y. bought 290,477 shares of AMPH on 14 March. They now own 2,899,859 AMPH shares.

Zhang Jack Y. bought 211,213 shares of AMPH on 14 March. They now own 1,359,470 AMPH shares.

Zhang Jack Y. sold 162,657 shares of AMPH on 14 March. They now own 1,196,813 AMPH shares.

Zhang Jack Y. bought 116,226 shares of AMPH on 10 March. They now own 2,609,382 AMPH shares.

Zhou Rong bought 52,437 shares of AMPH on 10 March. They now own 52,437 AMPH shares.

Zhang Jack Y. bought 48,996 shares of AMPH on 10 March. They now own 1,148,257 AMPH shares.

Liawatidewi Yakob bought 20,837 shares of AMPH on 10 March. They now own 93,671 AMPH shares.

Liawatidewi Yakob bought 44,253 shares of AMPH on 10 March. They now own 44,253 AMPH shares.

Zhang Jack Y. bought 246,821 shares of AMPH on 10 March. They now own 246,821 AMPH shares.

Zhou Rong bought 24,692 shares of AMPH on 10 March. They now own 140,686 AMPH shares.

Peters William J bought 36,747 shares of AMPH on 10 March. They now own 130,230 AMPH shares.

Peters William J bought 78,039 shares of AMPH on 10 March. They now own 78,039 AMPH shares.

Zhang Jack Y. bought 104,052 shares of AMPH on 10 March. They now own 104,052 AMPH shares.

Peters William J sold 2,141 shares of AMPH on 6 March. They now own 93,483 AMPH shares.

Liawatidewi Yakob sold 1,141 shares of AMPH on 6 March. They now own 72,834 AMPH shares.

Zhou Rong sold 1,354 shares of AMPH on 6 March. They now own 115,994 AMPH shares.

Zhang Jack Y. sold 3,069 shares of AMPH on 6 March. They now own 1,099,261 AMPH shares.

Zhang Jack Y. sold 9,645 shares of AMPH on 6 March. They now own 2,493,156 AMPH shares.

Petersen Floyd F. sold 1,000 shares of AMPH on 6 March. They now own 74,409 AMPH shares.

Peters William J sold 4,231 shares of AMPH on 4 March. They now own 97,363 AMPH shares.

Peters William J sold 7,490 shares of AMPH on 4 March. They now own 0 AMPH shares.

Peters William J sold 1,739 shares of AMPH on 4 March. They now own 95,624 AMPH shares.

Peters William J bought 7,490 shares of AMPH on 4 March. They now own 101,594 AMPH shares.

Zhou Rong sold 8,000 shares of AMPH on 13 December. They now own 9,787 AMPH shares.

Zhou Rong sold 8,000 shares of AMPH on 13 December. They now own 118,469 AMPH shares.

Zhou Rong bought 8,000 shares of AMPH on 13 December. They now own 126,469 AMPH shares.

Zhou Rong sold 7,000 shares of AMPH on 12 December. They now own 17,787 AMPH shares.

Zhou Rong bought 7,000 shares of AMPH on 12 December. They now own 125,469 AMPH shares.

Zhou Rong sold 7,000 shares of AMPH on 12 December. They now own 118,469 AMPH shares.

Prins Richard K sold 10,000 shares of AMPH on 9 December. They now own 30,471 AMPH shares.

Prins Richard K sold 10,000 shares of AMPH on 9 December. They now own 0 AMPH shares.

Prins Richard K sold 410 shares of AMPH on 9 December. They now own 30,061 AMPH shares.

Prins Richard K bought 10,000 shares of AMPH on 9 December. They now own 40,471 AMPH shares.

Zhou Rong bought 6,893 shares of AMPH on 12 November. They now own 125,281 AMPH shares.

Zhou Rong sold 6,893 shares of AMPH on 12 November. They now own 0 AMPH shares.

Prins Richard K bought 2,500 shares of AMPH on 12 November. They now own 36,471 AMPH shares.

Prins Richard K sold 2,500 shares of AMPH on 12 November. They now own 4,179 AMPH shares.

Zhou Rong sold 6,893 shares of AMPH on 12 November. They now own 118,388 AMPH shares.

Prins Richard K sold 5,000 shares of AMPH on 12 November. They now own 31,471 AMPH shares.

Prins Richard K sold 1,000 shares of AMPH on 12 November. They now own 30,471 AMPH shares.

Zhang Jack Y. sold 125,000 shares of AMPH on 11 November. They now own 1,104,756 AMPH shares.

Zhang Jack Y. sold 125,000 shares of AMPH on 11 November. They now own 2,508,554 AMPH shares.

Peters William J bought 7,426 shares of AMPH on 6 November. They now own 101,529 AMPH shares.

Liawatidewi Yakob sold 5,214 shares of AMPH on 6 November. They now own 10,962 AMPH shares.

Liawatidewi Yakob sold 5,214 shares of AMPH on 6 November. They now own 74,938 AMPH shares.

Peters William J sold 7,426 shares of AMPH on 6 November. They now own 94,103 AMPH shares.

Peters William J sold 7,426 shares of AMPH on 6 November. They now own 23,674 AMPH shares.

Liawatidewi Yakob bought 5,214 shares of AMPH on 6 November. They now own 80,152 AMPH shares.

Zhang Jack Y. sold 100,000 shares of AMPH on 13 September. They now own 290,477 AMPH shares.

Zhou Rong bought 3,000 shares of AMPH on 13 September. They now own 121,388 AMPH shares.

Zhou Rong sold 3,000 shares of AMPH on 13 September. They now own 118,388 AMPH shares.

Zhou Rong sold 3,000 shares of AMPH on 13 September. They now own 6,893 AMPH shares.

Zhang Jack Y. bought 100,000 shares of AMPH on 13 September. They now own 2,633,554 AMPH shares.

Petersen Floyd F. sold 3,000 shares of AMPH on 5 September. They now own 75,409 AMPH shares.

Zhou Rong bought 4,000 shares of AMPH on 26 August. They now own 122,388 AMPH shares.

Zhou Rong sold 4,000 shares of AMPH on 26 August. They now own 118,388 AMPH shares.

Zhou Rong sold 4,000 shares of AMPH on 26 August. They now own 9,893 AMPH shares.

Prins Richard K sold 1,500 shares of AMPH on 19 August. They now own 29,455 AMPH shares.

Prins Richard K sold 3,915 shares of AMPH on 12 August. They now own 10,000 AMPH shares.

Prins Richard K sold 6,004 shares of AMPH on 12 August. They now own 10,000 AMPH shares.

Prins Richard K bought 3,915 shares of AMPH on 12 August. They now own 37,886 AMPH shares.

Prins Richard K sold 7,182 shares of AMPH on 12 August. They now own 10,000 AMPH shares.

Prins Richard K bought 7,182 shares of AMPH on 12 August. They now own 51,072 AMPH shares.

Prins Richard K sold 17,101 shares of AMPH on 12 August. They now own 33,971 AMPH shares.

Prins Richard K bought 6,004 shares of AMPH on 12 August. They now own 43,890 AMPH shares.

Peters William J sold 10,282 shares of AMPH on 31 July. They now own 94,103 AMPH shares.

Peters William J sold 10,282 shares of AMPH on 31 July. They now own 4,943 AMPH shares.

Peters William J bought 10,282 shares of AMPH on 31 July. They now own 104,385 AMPH shares.

Peters William J sold 635 shares of AMPH on 27 June. They now own 94,103 AMPH shares.

Peters William J sold 2,961 shares of AMPH on 27 June. They now own 94,738 AMPH shares.

Zhang Jack Y. bought 100,000 shares of AMPH on 10 June. They now own 2,533,554 AMPH shares.

Petersen Floyd F. sold 3,000 shares of AMPH on 10 June. They now own 78,409 AMPH shares.

Zhang Jack Y. sold 100,000 shares of AMPH on 10 June. They now own 390,477 AMPH shares.

Lee Howard sold 579 shares of AMPH on 5 June. They now own 147,777 AMPH shares.

Liawatidewi Yakob sold 272 shares of AMPH on 4 June. They now own 74,938 AMPH shares.

Lee Howard bought 6,864 shares of AMPH on 3 June. They now own 6,864 AMPH shares.

Prins Richard K bought 3,076 shares of AMPH on 3 June. They now own 33,971 AMPH shares.

Petersen Floyd F. sold 500 shares of AMPH on 3 June. They now own 78,333 AMPH shares.

Lee Howard bought 3,076 shares of AMPH on 3 June. They now own 148,356 AMPH shares.

Deflin Gayle bought 6,864 shares of AMPH on 3 June. They now own 6,864 AMPH shares.

Zasloff Michael A bought 3,076 shares of AMPH on 3 June. They now own 24,402 AMPH shares.

Gerst Diane G. bought 3,076 shares of AMPH on 3 June. They now own 18,634 AMPH shares.

Prins Richard K bought 6,864 shares of AMPH on 3 June. They now own 6,864 AMPH shares.

Zasloff Michael A bought 6,864 shares of AMPH on 3 June. They now own 6,864 AMPH shares.

Petersen Floyd F. bought 6,864 shares of AMPH on 3 June. They now own 6,864 AMPH shares.

Deflin Gayle bought 3,076 shares of AMPH on 3 June. They now own 5,792 AMPH shares.

Petersen Floyd F. bought 3,076 shares of AMPH on 3 June. They now own 81,409 AMPH shares.

Gerst Diane G. bought 6,864 shares of AMPH on 3 June. They now own 6,864 AMPH shares.

Peters William J sold 387 shares of AMPH on 19 May. They now own 97,268 AMPH shares.

Petersen Floyd F. sold 500 shares of AMPH on 1 May. They now own 78,833 AMPH shares.

Petersen Floyd F. sold 500 shares of AMPH on 1 April. They now own 79,333 AMPH shares.

Liawatidewi Yakob sold 1,726 shares of AMPH on 17 March. They now own 74,778 AMPH shares.

Peters William J sold 4,255 shares of AMPH on 17 March. They now own 97,655 AMPH shares.

Zhang Jack Y. sold 7,052 shares of AMPH on 17 March. They now own 1,229,756 AMPH shares.

Zhou Rong sold 1,961 shares of AMPH on 17 March. They now own 118,016 AMPH shares.

Zhang Jack Y. sold 15,768 shares of AMPH on 17 March. They now own 2,433,554 AMPH shares.

Peters William J sold 5,105 shares of AMPH on 16 March. They now own 101,910 AMPH shares.

Zhou Rong sold 2,355 shares of AMPH on 16 March. They now own 119,977 AMPH shares.

Liawatidewi Yakob sold 1,671 shares of AMPH on 16 March. They now own 76,504 AMPH shares.