Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

WEST PHARMACEUTICAL SERVICES INC

WST · NYSE · CIK 0000105770 · Healthcare · Medical Instruments & Supplies

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

34 Form 4 transaction lines observed in the same window
8 sales · 26 option, withholding, award, gift or other lines

Last qualifying purchaseNo qualifying purchase is present in the local Form 4 history.

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesModerate
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Favorite Annette FSr. VP & Chief HR Officer
○▼○▼○▼○▼○▼
Campbell Shane AldenSVP, Proprietary Segment
○○
Winters ChadVP, Chief Accounting Officer
○▼
McMahon Robert W.SVP & Chief Financial Officer
○○
Pucci PaoloDirector
○
Michels Douglas ADirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 8 additional owner(s) remain in Form 4 evidence.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot.—

Recent Form 4 activity

0Purchases
8Sales
48Other Form 4 lines
25SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING8 sale line(s) · context only
OTHER26 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
2,101,162
Previous report
2,378,099
Avg daily volume
674,539
Days to cover
3.1

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

No qualifying code P equity purchase is present in the local Form 4 history.

Form 4 evidence

56 transaction lines in the latest 365-day window; 366 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-15Favorite Annette FSale (S)Common Stock2,524USD 365.00USD 921,260SEC filing ↗
2026-09-15Favorite Annette FOption exercise / conversion (M)Common Stock2,524USD 89.64USD 226,251SEC filing ↗
2026-09-14Favorite Annette FSale (S)Common Stock2,500USD 355.00USD 887,500SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-15Favorite Annette FSale (S)Common Stock2,524USD 365.00USD 921,260SEC filing ↗
2026-09-15Favorite Annette FOption exercise / conversion (M)Common Stock2,524USD 89.64USD 226,251SEC filing ↗
2026-09-14Favorite Annette FSale (S)Common Stock2,500USD 355.00USD 887,500SEC filing ↗
2026-09-14Favorite Annette FOption exercise / conversion (M)Common Stock2,500USD 89.64USD 224,100SEC filing ↗
2026-09-11Favorite Annette FSale (S)Common Stock2,500USD 345.00USD 862,500SEC filing ↗
2026-09-11Favorite Annette FOption exercise / conversion (M)Common Stock2,500USD 89.64USD 224,100SEC filing ↗
2026-09-08Favorite Annette FSale (S)Common Stock8,135USD 340.81USD 2,772,489SEC filing ↗
2026-09-08Favorite Annette FOption exercise / conversion (M)Common Stock8,135USD 85.37USD 694,453SEC filing ↗
2026-08-11McMahon Robert W.Option exercise / conversion (M)Common Stock7,149USD —USD —SEC filing ↗
2026-08-11McMahon Robert W.Tax withholding (F)Common Stock3,109USD 351.37USD 1,092,480SEC filing ↗
2026-05-12Campbell Shane AldenOption exercise / conversion (M)Common Stock770USD —USD —SEC filing ↗
2026-05-12Campbell Shane AldenTax withholding (F)Common Stock219USD 312.07USD 68,424SEC filing ↗
2026-05-04Pucci PaoloAward / grant (A)Common Stock791USD 0.00USD 0SEC filing ↗
2026-05-04Michels Douglas AAward / grant (A)Common Stock791USD 0.00USD 0SEC filing ↗
2026-05-04Lockhart Stephen HAward / grant (A)Common Stock791USD 0.00USD 0SEC filing ↗
2026-05-04LAI GOLDMAN MYLAAward / grant (A)Common Stock791USD 0.00USD 0SEC filing ↗
2026-05-04Keller Deborah LAward / grant (A)Common Stock791USD 0.00USD 0SEC filing ↗
2026-05-04Joseph MollyAward / grant (A)Common Stock791USD 0.00USD 0SEC filing ↗
2026-05-04HAUGEN JANET BRUTSCHEAAward / grant (A)Common Stock791USD 0.00USD 0SEC filing ↗
2026-05-04Feehery William FAward / grant (A)Common Stock791USD 0.00USD 0SEC filing ↗
2026-05-04FRIEL ROBERT FAward / grant (A)Common Stock791USD 0.00USD 0SEC filing ↗
2026-05-04BUTHMAN MARK AAward / grant (A)Common Stock791USD 0.00USD 0SEC filing ↗
2026-04-27Winters ChadSale (S)Common Stock896USD 300.67USD 269,400SEC filing ↗
2026-04-27Winters ChadOption exercise / conversion (M)Common Stock896USD 173.22USD 155,205SEC filing ↗
2026-04-27Favorite Annette FSale (S)Common Stock2,817USD 305.20USD 859,748SEC filing ↗
2026-04-27Favorite Annette FOption exercise / conversion (M)Common Stock2,817USD 83.47USD 235,135SEC filing ↗
2026-02-20Witherspoon CharlesOption exercise / conversion (M)Common Stock60USD —USD —SEC filing ↗
2026-02-20Witherspoon CharlesTax withholding (F)Common Stock22USD 241.12USD 5,322SEC filing ↗
2026-02-20Winters ChadOption exercise / conversion (M)Common Stock89USD —USD —SEC filing ↗
2026-02-20Winters ChadTax withholding (F)Common Stock30USD 241.12USD 7,277SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerWST
CIK0000105770
SectorHealthcare
IndustryMedical Instruments & Supplies Yahoo Finance
SEC SIC3841 Surgical & Medical Instruments & Apparatus
ExchangeNYSE

Data coverage

Local Form 4 history366 transaction lines from 2020-02-18 to 2026-09-15
0 P purchase lines · 106 S sale lines · 260 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.