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VANGUARD GROUP INC
> AMPH
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,773,609 | 167,447 | 159,399,308,000 | 159,326,074,000 | $57,470.00 |
| 09/30/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,606,162 | 45,385 | 73,234,000 | -15,855,000 | $28.10 |
| 06/30/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,560,777 | 77,572 | 89,089,000 | -58,000 | $34.79 |
| 03/31/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,483,205 | 15,094 | 89,147,000 | 31,665,000 | $35.90 |
| 12/31/2021 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,468,111 | -54,513 | 57,482,000 | 9,527,000 | $23.29 |
| 09/30/2021 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,522,624 | 62,893 | 47,955,000 | -1,633,000 | $19.01 |
| 06/30/2021 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,459,731 | -18,296 | 49,588,000 | -245,000 | $20.16 |
| 02/10/2021 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,478,027 | 0 | 46,661,248 | -3,171,752 | $18.83 |
| 12/31/2020 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,478,027 | 68,253 | 49,833,000 | 4,650,000 | $20.11 |
| 09/30/2020 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,409,774 | 19,654 | 45,183,000 | -8,499,000 | $18.75 |
| 06/30/2020 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,390,120 | 6,470 | 53,682,000 | 18,309,000 | $22.46 |
| 03/31/2020 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,383,650 | 20,146 | 35,373,000 | -10,218,000 | $14.84 |
| 02/11/2020 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,363,504 | 0 | 47,199,175 | 1,608,175 | $19.97 |
| 12/31/2019 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,363,504 | -62,624 | 45,591,000 | -2,520,000 | $19.29 |
| 09/30/2019 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,426,128 | 44,367 | 48,111,000 | -2,168,000 | $19.83 |
| 06/30/2019 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,381,761 | 57,349 | 50,279,000 | 2,791,000 | $21.11 |
| 03/31/2019 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,324,412 | 36,003 | 47,488,000 | 1,948,000 | $20.43 |
| 12/31/2018 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,288,409 | 45,016 | 45,540,000 | 2,378,000 | $19.90 |
| 09/30/2018 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,243,393 | -24,630 | 43,162,000 | 8,552,000 | $19.24 |
| 06/30/2018 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,268,023 | -61,785 | 34,610,000 | -9,074,000 | $15.26 |
| 03/31/2018 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,329,808 | 41,357 | 43,684,000 | -345,000 | $18.75 |
| 12/31/2017 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,288,451 | -103,744 | 44,029,000 | 1,281,000 | $19.24 |
| 09/30/2017 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,392,195 | -22,602 | 42,748,000 | 42,704,872 | $17.87 |
| 06/30/2017 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,414,797 | 235,033 | 43,128 | -31,563,872 | $0.02 |
| 03/31/2017 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,179,764 | 8,744 | 31,607,000 | -8,383,000 | $14.50 |
| 12/31/2016 | Amphastar Pharmaceuticals, Inc. | AMPH | 2,171,020 | 340,921 | 39,990,000 | 5,274,000 | $18.42 |
| 09/30/2016 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,830,099 | 1,830,099 | 34,716,000 | 34,716,000 | $18.97 |
| 06/30/2016 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,499,766 | 68,048 | 24,175,000 | 6,995,000 | $16.12 |
| 03/31/2016 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,431,718 | 265,777 | 17,180,000 | 3,549,000 | $12.00 |
| 12/31/2015 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,262,681 | 96,740 | 17,968,000 | 4,337,000 | $14.23 |
| 09/30/2015 | Amphastar Pharmaceuticals, Inc. | AMPH | 6,939,477 | 5,922,994 | 272,649,000 | 254,779,000 | $39.29 |
| 06/30/2015 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,016,483 | 163,896 | 17,870,000 | 5,116,000 | $17.58 |
| 03/31/2015 | Amphastar Pharmaceuticals, Inc. | AMPH | 852,587 | 696,857 | 12,754,000 | 10,946,000 | $14.96 |
| 12/31/2014 | Amphastar Pharmaceuticals, Inc. | AMPH | 155,730 | 106,914 | 1,808,000 | 1,240,000 | $11.61 |
| 09/30/2014 | Amphastar Pharmaceuticals, Inc. | AMPH | 48,816 | 48,816 | 568,000 | 568,000 | $11.64 |
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