West Pharmaceutical Services, Inc. (WST) Insider Trading

Over the last 6 months, 570 institutions increased and 549 reduced their position (13F).

Insider Activity

Sentiment
50/100
Buys (3m)
0
Sells (3m)
0
Net (3m)
$0
Insider trades by month Buys Sells
Mar
May
Jun
Aug
Oct
Apr
Context3-month price +4.9%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
Aug 12, 2026McMahon Robert W.officer: SVP & Chief Financial OfficerOption6,355
Aug 12, 2026McMahon Robert W.officer: SVP & Chief Financial OfficerOption794
Aug 12, 2026McMahon Robert W.officer: SVP & Chief Financial OfficerTax2,764$351.37
Aug 12, 2026McMahon Robert W.officer: SVP & Chief Financial OfficerTax346$351.37
Jul 1, 2026HAUGEN JANET BRUTSCHEAdirectorGrant46
May 14, 2026Campbell Shane Aldenofficer: SVP, Proprietary SegmentTax84$312.07
May 14, 2026Campbell Shane Aldenofficer: SVP, Proprietary SegmentOption474
May 14, 2026Campbell Shane Aldenofficer: SVP, Proprietary SegmentTax135$312.07
May 14, 2026Campbell Shane Aldenofficer: SVP, Proprietary SegmentOption296
May 6, 2026Pucci PaolodirectorGrant791
May 6, 2026HAUGEN JANET BRUTSCHEAdirectorGrant791
May 6, 2026Keller Deborah LdirectorGrant791
May 6, 2026LAI GOLDMAN MYLAdirectorGrant791
May 6, 2026Joseph MollydirectorGrant791
May 6, 2026Lockhart Stephen HdirectorGrant791
May 6, 2026FRIEL ROBERT FdirectorGrant791
May 6, 2026Michels Douglas AdirectorGrant791
May 6, 2026Feehery William FdirectorGrant791
May 6, 2026BUTHMAN MARK AdirectorGrant791
Apr 29, 2026Favorite Annette Fofficer: Sr. VP & Chief HR OfficerOption2,817$83.47
Apr 29, 2026Winters Chadofficer: VP, Chief Accounting OfficerOption896$173.22
Apr 29, 2026Winters Chadofficer: VP, Chief Accounting OfficerSell896$300.67
Apr 29, 2026Favorite Annette Fofficer: Sr. VP & Chief HR OfficerSell2,817$305.20
Feb 23, 2026Witherspoon Charlesofficer: VP & TreasurerTax22$241.12
Feb 23, 2026Winters Chadofficer: VP, Chief Accounting OfficerOption89
Feb 23, 2026Poussot Rodolphe Jeanofficer: SVP, Strategy & Corporate DevTax130$241.12
Feb 23, 2026Poussot Rodolphe Jeanofficer: SVP, Strategy & Corporate DevOption383
Feb 23, 2026Witherspoon Charlesofficer: VP & TreasurerOption60
Feb 23, 2026Winters Chadofficer: VP, Chief Accounting OfficerTax30$241.12
Feb 19, 2026Witherspoon Charlesofficer: VP & TreasurerGrant116

Source: WST SEC Form 4 filings, latest Aug 12, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their WST positions over the last 6 months (SEC Form 13F).

Increased
570
New positions
242
Reduced
549
Sold out
65
Largest moves
InstitutionActionSharesFiled
BLACKROCK, INC.Increased6.8MMay 13, 2026
BlackRock, Inc.Reduced6.7MAug 7, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position4.7MMay 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCReduced4.6MAug 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position4.1MMay 8, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCReduced4.0MAug 13, 2026
FMR LLCIncreased3.6MAug 13, 2026
STATE STREET CORPIncreased3.3MAug 7, 2026
STATE STREET CORPIncreased3.3MMay 15, 2026
ARTISAN PARTNERS LIMITED PARTNERSHIPReduced2.7MMay 13, 2026
BANK OF NEW YORK MELLON CORPReduced2.5MMay 5, 2026
Artisan Partners Limited PartnershipReduced2.4MAug 13, 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.Increased2.3MMay 15, 2026
GENERATION INVESTMENT MANAGEMENT LLPIncreased2.2MMay 14, 2026
Bank of New York Mellon CorpReduced2.0MAug 6, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.