| 2026-02-17 | State/ Country of Incorporation | Stock Ownership |
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| 2026-02-17 | West Pharmaceutical Services, Inc. | Parent Co. |
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| 2026-02-17 | Tech Group Europe Limited | Ireland |
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| 2026-02-17 | Tech Group Grand Rapids, Inc. | Delaware |
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| 2026-02-17 | TGPR Holdings Limited | Ireland |
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| 2026-02-17 | West Services and Solutions, LLC | Delaware |
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| 2026-02-17 | West Contract Manufacturing, LLC | Delaware |
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| 2026-02-17 | West Pharma. Services IL, Ltd. | Israel |
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| 2026-02-17 | West Pharmaceutical Packaging (China) Company Ltd. | China |
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| 2026-02-17 | West Pharmaceutical Packaging India Private Limited | India |
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| 2026-02-17 | West Pharmaceutical Products Ireland, Ltd. | Ireland |
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| 2026-02-17 | West Pharmaceutical Services Argentina S.A. | Argentina |
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| 2026-02-17 | West Pharmaceutical Services Asia, Ltd. | Taiwan |
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| 2026-02-17 | West Pharmaceutical Services Australia Pty. Ltd. | Australia |
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| 2026-02-17 | West Pharmaceutical Services AZ, Inc. | Arizona |
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| 2026-02-17 | West Pharmaceutical Services Beograd d.o.o. | Serbia |
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| 2026-02-17 | West Pharmaceutical Services Brasil Ltda. | Brazil |
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| 2026-02-17 | West Pharmaceutical Services Colombia S.A.S. | Colombia |
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| 2026-02-17 | West Pharmaceutical Services Cornwall Limited | England |
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| 2026-02-17 | West Pharmaceutical Services Danmark ApS | Denmark |
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| 2026-02-17 | West Pharmaceutical Services Delaware Acquisition, Inc. | Delaware |
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| 2026-02-17 | West Pharmaceutical Services Deutschland GmbH & Co. KG | Germany |
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| 2026-02-17 | West Pharmaceutical Services European Holdings 1 GmbH | Germany |
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| 2026-02-17 | West Pharmaceutical Services European Holdings II GmbH | Germany |
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| 2026-02-17 | West Pharmaceutical Services France S.A. | France |
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| 2026-02-17 | West Pharmaceutical Services Group Limited | England |
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| 2026-02-17 | West Pharmaceutical Services Hispania S.A. | Spain |
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| 2026-02-17 | West Pharmaceutical Services Holding II GmbH | Germany |
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| 2026-02-17 | West Pharmaceutical Services Holding GmbH | Germany |
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| 2026-02-17 | West Pharmaceutical Services Holding Ireland North, Ltd. | Ireland |
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| 2026-02-17 | West Pharmaceutical Services Holding Ireland South, Ltd. | Ireland |
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| 2026-02-17 | West Pharmaceutical Services Holding Japan, GK | Japan |
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| 2026-02-17 | West Pharmaceutical Services Holdings Ltd. | Israel |
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| 2026-02-17 | West Pharmaceutical Services Italia S.r.L. | Italy |
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| 2026-02-17 | West Pharmaceutical Services Korea, Ltd. | South Korea |
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| 2026-02-17 | West Pharmaceutical Services Lakewood, Inc. | Delaware |
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| 2026-02-17 | West Pharmaceutical Services of Delaware, Inc. | Delaware |
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| 2026-02-17 | West Pharmaceutical Services of Florida, Inc. | Florida |
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| 2026-02-17 | West Pharmaceutical Services Shanghai Medical Rubber Products Co., Ltd. | China |
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| 2026-02-17 | West Pharmaceutical Services Singapore Pte. Ltd. | Singapore |
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| 2026-02-17 | West Pharmaceutical Services Switzerland GmbH In Liquidation | Switzerland |
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| 2026-02-17 | West Pharmaceutical Services Verwaltungs GmbH | Germany |
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