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FRONTIER CAPITAL MANAGEMENT CO LLC
> AMPH
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Amphastar Pharmaceuticals, Inc. | AMPH | 145,896 | -41,164 | 8,384,643,000 | 1,369,893,000 | $57,470.00 |
| 03/31/2023 | Amphastar Pharmaceuticals, Inc. | AMPH | 187,060 | -17,513 | 7,014,750,000 | 7,009,001,000 | $37,500.00 |
| 09/30/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 204,573 | -1,090 | 5,749,000 | -1,406,000 | $28.10 |
| 06/30/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 205,663 | -45,609 | 7,155,000 | -1,866,000 | $34.79 |
| 03/31/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 251,272 | -936 | 9,021,000 | 3,147,000 | $35.90 |
| 12/31/2021 | Amphastar Pharmaceuticals, Inc. | AMPH | 252,208 | -3,605 | 5,874,000 | 1,011,000 | $23.29 |
| 09/30/2021 | Amphastar Pharmaceuticals, Inc. | AMPH | 255,813 | 70,834 | 4,863,000 | 1,134,000 | $19.01 |
| 06/30/2021 | Amphastar Pharmaceuticals, Inc. | AMPH | 184,979 | 184,979 | 3,729,000 | 3,729,000 | $20.16 |
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