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WST West Pharmaceutical Services, Inc.

Insider figures are trailing 90 days, open-market Form 4 only. Institutional figures are the latest reported quarter. These windows are not simultaneous.

-$5.4M net selling - trailing 90 days

0 buyers - 1 unique sellers

Historical context: most recent complete month (2026-09) is the 2nd percentile of this ticker's monthly net P/S flow over 24 complete months. Lower percentiles are more selling; higher are more buying. P10–P90: -$153K to $0.

Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.

open-market Form 4 only - grants, exercises, tax withholding excluded. ~ derived from SEC-reported shares x price.

Insider net $ (monthly)open-market Form 4 only - grants, exercises, tax withholding excluded$10.0M$5.0M$0-$5.0M-$10.0M2024-10 -$218K2024-11 $02024-12 $02025-01 $02025-02 $02025-03 $02025-04 $02025-05 $02025-06 $02025-07 $02025-08 $02025-09 $02025-10 $02025-11 $02025-12 $02026-01 $02026-02 $02026-03 $02026-04 -$1.1M2026-05 $02026-06 $02026-07 $02026-08 $02026-09 -$5.4MOct 24Dec 24Feb 25Apr 25Jun 25Aug 25Oct 25Dec 25Feb 26Apr 26Jun 26Aug 26~ derived from SEC-reported shares x price. Hatched: excluded (implausible price) or unpriced.

Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.

Who is responsible

Insider Role Net activity Rows
Favorite Annette F Sr. VP & Chief HR Officer -~$5.4M 6

Transactions

Date Insider Role Type Shares Price Value
September 15, 2026 Favorite Annette F Sr. VP & Chief HR Officer S -2524 365 ~$0.9M
September 14, 2026 Favorite Annette F Sr. VP & Chief HR Officer S -2500 355 ~$0.9M
September 11, 2026 Favorite Annette F Sr. VP & Chief HR Officer S -2500 345 ~$0.9M
September 8, 2026 Favorite Annette F Sr. VP & Chief HR Officer 3 reported sale rows 8135 — ~$2.8M
April 27, 2026 Winters Chad VP, Chief Accounting Officer S -896 300.6688 ~$0.3M
April 27, 2026 Favorite Annette F Sr. VP & Chief HR Officer S -2817 305.2018 ~$0.9M
October 29, 2024 Witherspoon Charles VP & Treasurer 2 reported sale rows 703 — ~$0.2M