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Rock Springs Capital Management LP
> WST
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | WEST PHARMACEUTICAL SERVICES INC | WST | 202,000 | 0 | 77,258,940,000 | 7,272,000,000 | $382,470.00 |
| 03/31/2023 | WEST PHARMACEUTICAL SERVICES INC | WST | 202,000 | 16,500 | 69,986,940,000 | 26,329,515,000 | $346,470.00 |
| 12/31/2022 | WEST PHARMACEUTICAL SERVICES INC | WST | 185,500 | 5,000 | 43,657,425,000 | 43,613,008,000 | $235,350.00 |
| 09/30/2022 | WEST PHARMACEUTICAL SERVICES INC | WST | 180,500 | 69,500 | 44,417,000 | 10,854,000 | $246.08 |
| 06/30/2022 | WEST PHARMACEUTICAL SERVICES INC | WST | 111,000 | 41,750 | 33,563,000 | 5,121,000 | $302.37 |
| 03/31/2022 | WEST PHARMACEUTICAL SERVICES INC | WST | 69,250 | 23,750 | 28,442,000 | 7,102,000 | $410.71 |
| 12/31/2021 | WEST PHARMACEUTICAL SERVICES INC | WST | 45,500 | 15,500 | 21,340,000 | 8,604,000 | $469.01 |
| 09/30/2021 | WEST PHARMACEUTICAL SERVICES INC | WST | 30,000 | 1,500 | 12,736,000 | 2,502,000 | $424.53 |
| 06/30/2021 | WEST PHARMACEUTICAL SERVICES INC | WST | 28,500 | 0 | 10,234,000 | 2,203,000 | $359.09 |
| 03/31/2021 | WEST PHARMACEUTICAL SERVICES INC | WST | 28,500 | 0 | 8,031,000 | -43,000 | $281.79 |
| 12/31/2020 | WEST PHARMACEUTICAL SERVICES INC | WST | 28,500 | 0 | 8,074,000 | 239,000 | $283.30 |
| 09/30/2020 | WEST PHARMACEUTICAL SERVICES INC | WST | 28,500 | -42,500 | 7,835,000 | -8,294,000 | $274.91 |
| 06/30/2020 | WEST PHARMACEUTICAL SERVICES INC | WST | 71,000 | 0 | 16,129,000 | 5,319,000 | $227.17 |
| 03/31/2020 | WEST PHARMACEUTICAL SERVICES INC | WST | 71,000 | -81,500 | 10,810,000 | -12,115,000 | $152.25 |
| 12/31/2019 | WEST PHARMACEUTICAL SERVICES INC | WST | 152,500 | 0 | 22,925,000 | 1,297,000 | $150.33 |
| 09/30/2019 | WEST PHARMACEUTICAL SERVICES INC | WST | 152,500 | 15,000 | 21,628,000 | 4,420,000 | $141.82 |
| 06/30/2019 | WEST PHARMACEUTICAL SERVICES INC | WST | 137,500 | 12,500 | 17,208,000 | 3,433,000 | $125.15 |
| 03/31/2019 | WEST PHARMACEUTICAL SERVICES INC | WST | 125,000 | -35,000 | 13,775,000 | -1,910,000 | $110.20 |
| 12/31/2018 | WEST PHARMACEUTICAL SERVICES INC | WST | 160,000 | 0 | 15,685,000 | -4,070,000 | $98.03 |
| 09/30/2018 | WEST PHARMACEUTICAL SERVICES INC | WST | 160,000 | 0 | 19,755,000 | 3,869,000 | $123.47 |
| 06/30/2018 | WEST PHARMACEUTICAL SERVICES INC | WST | 160,000 | 160,000 | 15,886,000 | 15,886,000 | $99.29 |
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