West Pharmaceutical Services
Supplies injectable-drug containment, delivery systems, and contract device manufacturing.
$349.58
After-hours close+12.18 (+3.61%)
At close$337.40(−2.51%)
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Breakdown13F · Form 4
Institutions 158.47%Insiders 0.61%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 70.38M · Float 69.93M · 99.4% free float
Institutions13F, as of Jun 30, 2026
851 holders · 111.52M shares · 154 new positions · 453 increased · 260 reduced · 76 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 6.65M | 9.45% | −184.9K | Aug 7, 2026 |
| Vanguard Capital Management LLC | 4.61M | 6.56% | −70.2K | Aug 13, 2026 |
| Vanguard Portfolio Management LLC | 4.02M | 5.71% | −78.2K | Aug 13, 2026 |
| FMR LLC | 3.57M | 5.08% | +2.33M | Aug 13, 2026 |
| State Street Corp | 3.35M | 4.76% | +54.9K | Aug 7, 2026 |
| Artisan Partners Limited Partnership | 2.41M | 3.43% | −246.1K | Aug 13, 2026 |
| Bank of New York Mellon Corp | 2.04M | 2.90% | −422.0K | Aug 6, 2026 |
| Generation Investment Management LLP | 2.03M | 2.88% | −215.7K | Aug 10, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 8.40% | 6.07M | 13G | Apr 24, 2025 ↗ |
| Vanguard Capital Management | 7.48% | 5.40M | 13G | Apr 30, 2026 ↗ |
| Vanguard Portfolio Management | 5.69% | 4.10M | 13G | Apr 29, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Eric Mark Green | director, officer: President, CEO and Board Chair | 175.2K | 0.25% | Feb 19, 2026 |
| Douglas A. Michels | director | 46.5K | 0.07% | May 6, 2026 |
| Thomas W. Hofmann | director | 44.6K | 0.06% | May 8, 2025 |
| Mark A. Buthman | director | 44.3K | 0.06% | May 6, 2026 |
| William F. Feehery | director | 32.5K | 0.05% | May 6, 2026 |
| Goldman Myla Lai | director | 20.4K | 0.03% | May 6, 2026 |
| Annette F. Favorite | officer: Sr. VP & Chief HR Officer | 16.8K | 0.02% | Apr 29, 2026 |
| Paolo Pucci | director | 11.9K | 0.02% | May 6, 2026 |
| Deborah L. Keller | director | 11.6K | 0.02% | May 6, 2026 |
| Robert W. McMahon | officer: SVP & Chief Financial Officer | 7.0K | 0.01% | Aug 12, 2026 |
8 ten-percent owners hold 451.6K shares by Form 4, outside the officers-and-directors figure above · 28 people have not refiled in the last 18 months (1.59M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Apr 27, 2026 | Chad Wintersofficer: VP, Chief Accounting Officer | Sale | 896 | $300.67 | 1,523 |
| Apr 27, 2026 | Annette F. Favoriteofficer: Sr. VP & Chief HR Officer | Sale | 2,817 | $305.20 | 16,828 |
CongressHouse and Senate disclosures
Not reported.