West Pharmaceutical Services, Inc.
MX ˙ BMV ˙ US9553061055
SecurityMX:WST / West Pharmaceutical Services, Inc.
InstitutionUtah Retirement Systems
Latest Disclosed Ownership11,620 shares
Latest Disclosed Value $ 2,912,437
Utah Retirement Systems reports 1.63% decrease in ownership of WST / West Pharmaceutical Services, Inc.

On May 15, 2026 - Utah Retirement Systems filed a 13F-HR form disclosing ownership of 11,620 shares of West Pharmaceutical Services, Inc. (MX:WST) valued at $2,912,437 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 11,813 shares of West Pharmaceutical Services, Inc.. This represents a change in shares of -1.63% during the quarter.

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)
2026-05-15 2026-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 11,620 -193 -1.63 2,912 -10.40 0.0298
2026-02-17 2025-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 11,813 0 0.00 3,250 4.91 0.0309
2025-11-14 2025-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 11,813 -123 -1.03 3,099 18.65 0.0301
2025-08-14 2025-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 11,936 -124 -1.03 2,612 -3.26 0.0273
2025-05-15 2025-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 12,060 0 0.00 2,700 -31.67 0.0311
2025-02-14 2024-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 12,060 0 0.00 3,950 9.15 0.0435
2024-11-14 2024-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 12,060 100 0.84 3,620 -8.12 0.0408
2024-08-14 2024-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 11,960 -900 -7.00 3,940 -22.58 0.0468
2024-05-15 2024-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 12,860 0 0.00 5,089 12.37 0.0595
2024-02-14 2023-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 12,860 100 0.78 4,528 -5.41 0.0577
2023-11-14 2023-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 12,760 100 0.79 4,788 -1.14 0.0684
2023-08-14 2023-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 12,660 -500 -3.80 4,842 6.21 0.0671
2023-05-16 2023-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,160 48 0.37 4,560 47.78 0.0659
2023-02-15 2022-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,112 -200 -1.50 3,086 -5.80 0.0489
2022-11-14 2022-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,312 200 1.53 3,275 -17.40 0.0546
2022-08-16 2022-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,112 0 0.00 3,965 -26.37 0.0635
2022-05-13 2022-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,112 -200 -1.50 5,385 -13.74 0.0717
2022-02-14 2021-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,312 30 0.23 6,243 10.71 0.0771
2021-11-16 2021-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,282 -670 -4.80 5,639 12.53 0.0762
2021-08-16 2021-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,952 -100 -0.71 5,011 26.54 0.0645
2021-05-17 2021-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 14,052 -600 -4.10 3,960 -4.60 0.0552
2021-02-16 2020-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 14,652 500 3.53 4,151 6.68 0.0589
2020-11-16 2020-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 14,152 100 0.71 3,891 21.90 0.0646
2020-08-13 2020-06-30 13F/A-1 WEST PHARMACEUTICAL SVSC COM 955306105 14,052 100 0.72 3,192 50.28 0.0586
2020-08-13 2020-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 14,052 100 3,192 58,586.1144
2020-05-15 2020-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,952 0 0.00 2,124 1.29 0.0459
2020-02-12 2019-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,952 0 0.00 2,097 5.96 0.0369
2019-11-14 2019-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,952 100 0.72 1,979 14.13 0.0377
2019-08-14 2019-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,852 65 0.47 1,734 14.08 0.0332
2019-05-15 2019-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,787 187 1.38 1,520 14.03 0.0301
2019-02-08 2018-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,600 0 0.00 1,333 -20.61 0.0301
2018-11-13 2018-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,600 100 0.74 1,679 25.21 0.0325
2018-08-10 2018-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,500 -200 -1.46 1,341 10.83 0.0278
2018-05-15 2018-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,700 100 0.74 1,210 -9.84 0.0257
2018-02-14 2017-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,600 200 1.49 1,342 4.03 0.0282
2017-11-13 2017-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,400 0 0.00 1,290 1.90 0.0290
2017-08-08 2017-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,400 200 1.52 1,266 17.44 0.0295
2017-05-11 2017-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,200 0 0.00 1,078 -3.75 0.0258
2017-02-10 2016-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,200 100 0.76 1,120 14.75 0.0282
2016-11-07 2016-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,100 0 0.00 976 -1.81 0.0253
2016-08-03 2016-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 13,100 13,100 994 0.0265
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.