Birch Hill Investment Advisors LLC
Position in WST — West Pharmaceutical Services Inc
CIK 1424177
Boston, MA
Position in WST
as of Mar 31, 2026
· filed Apr 29, 2026
Position Value
$40,392,891
-$1,469,109 QoQ
Shares Held
161,159
+5.9% QoQ
Ownership
0.228%
of shares outstanding
% of Portfolio
1.98%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2025
4 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in WST Over Time
Shares Held
Position Value (USD)
Position in Medical Instruments & Supplies
Healthcare · as of Mar 31, 2026Birch Hill Investment Advisors LLC holds $71,946,679 across 3 Medical Instruments & Supplies names. WST ranks #1 (56.1% of the industry book) .
All Filings in WST
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4 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $40,392,891 | 161,159 | Shares | Sole | 2026-04-29 | |
| 2025-12-31 | $41,862,000 | 152,148 | Shares | Sole | 2026-01-27 | |
| 2025-09-30 | $35,800,175 | 136,470 | Shares | Sole | 2025-10-23 | |
| 2025-06-30 | $15,935,641 | 72,832 | Shares | Sole | 2025-07-30 | |
| No filing history on record for this holder in this stock. | ||||||