West Pharmaceutical Services Inc
WST- Exchange
- NYSE
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0000105770
In the last 90 days, West Pharmaceutical Services Inc insiders filed 0 open-market purchases and 2 sales; 833 institutions reported holding it in 13F filings for Q2 2026, worth $25.2B in total; Gates Foundation Trust is the only superinvestor holding it.
Holders of 5% or more of WST
Holders whose latest Schedule 13D or 13G filing reports 5% or more of West Pharmaceutical Services Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 8.40%6.07M shares | – | Apr 24, 20251 filing | Apr 24, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
3 Schedule 13D and 13G filings on West Pharmaceutical Services Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 27, 20262:13 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −13.49 ppfrom 13.49%Below 5% | Mar 13, 2026 | SEC |
| Oct 31, 202511:41 AM ET | Vanguard Group Inc | 13G/A | 13.49%9.70M shares | – | Sep 30, 2025 | SEC |
| Apr 24, 20259:52 AM ET | BlackRock, Inc. | 13G/A | 8.40%6.07M shares | – | Mar 31, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell West Pharmaceutical Services Inc shares.
No Form 144 notices for West Pharmaceutical Services Inc are on file.