West Pharmaceutical Services, Inc.
US ˙ NYSE ˙ US9553061055

SecurityWST / West Pharmaceutical Services, Inc.
InstitutionWetherby Asset Management Inc
Latest Disclosed Ownership2,454 shares
Latest Disclosed Value $ 643,758
Wetherby Asset Management Inc reports 0.41% increase in ownership of WST / West Pharmaceutical Services, Inc.

On November 14, 2025 - Wetherby Asset Management Inc filed a 13F-HR form disclosing ownership of 2,454 shares of West Pharmaceutical Services, Inc. (US:WST) valued at $643,758 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 14, 2025 disclosing 2,444 shares of West Pharmaceutical Services, Inc.. This represents a change in shares of 0.41% during the quarter. The current value of the position is $771,783 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2025-11-14 2025-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,454 10 0.41 644 20.41 0.0263
2025-08-14 2025-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,444 -691 -22.04 535 -47.95 0.0238
2025-02-14 2024-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,135 21 0.67 1,027 9.85 0.0492
2024-11-14 2024-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,114 -126 -3.89 935 -12.46 0.0427
2024-08-14 2024-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,240 -58 -1.76 1,067 -18.24 0.0503
2024-05-15 2024-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,298 -53 -1.58 1,305 10.69 0.0622
2024-02-14 2023-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,351 9 0.27 1,180 -5.91 0.0615
2023-11-14 2023-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,342 6 0.18 1,254 -1.73 0.0711
2023-08-14 2023-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,336 -15 -0.45 1,276 9.82 0.0687
2023-05-12 2023-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,351 183 5.78 1,161 55.84 0.0679
2023-02-14 2022-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,168 381 13.67 746 8.60 0.0479
2022-11-14 2022-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,787 -341 -10.90 686 -27.48 0.0484
2022-08-15 2022-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,128 2,306 280.54 946 179.88 0.0646
2022-05-16 2022-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 822 44 5.66 338 -7.40 0.0194
2022-02-14 2021-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 778 109 16.29 365 28.52 0.0205
2021-11-15 2021-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 669 26 4.04 284 22.94 0.0175
2021-08-16 2021-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 643 643 231 0.0141
2020-05-06 2020-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 0 -2,272 -100.00 0 -100.00
2020-01-28 2019-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,272 79 3.60 342 9.97 0.0337
2019-10-31 2019-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,193 -40 -1.79 311 11.47 0.0325
2019-07-25 2019-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,233 0 0.00 279 13.41 0.0305
2019-07-25 2019-03-31 13F/A-1 WEST PHARMACEUTICAL SVSC COM 955306105 2,233 -15 -0.67 246 11.82 0.0306
2019-05-09 2019-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,233 -15 246
2019-01-30 2018-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,248 0 0.00 220 -20.86 0.0311
2018-11-07 2018-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,248 0 0.00 278 24.66 0.0343
2018-07-24 2018-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,248 2,248 0.00 223 -19.78 0.0302
2018-05-04 2018-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 0 -2,082 -100.00 0 -100.00
2018-02-09 2017-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,082 0 0.00 205 2.50 0.0284
2017-11-13 2017-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,082 2,082 200 0.0297
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.