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Public ownership evidence

West Pharmaceutical Services, Inc. (WST) Ownership Disclosures

Read WST insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-10T07:40:50.020Z

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2026-10-022026-09-30HAUGEN JANET BRUTSCHEAA44Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-30 and its public availability date is 2026-10-02. Subtracting those calendar dates gives 2 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0000105770-26-000112 ↗SEC 0000105770-26-000110 ↗SEC 0000105770-26-000110 ↗

Recent Form 4 activity

Inspect all 13 displayed rows: Recent Form 4 activity

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2026-10-022026-09-30HAUGEN JANET BRUTSCHEAA44Not reported
2026-09-152026-09-15Favorite Annette FS2,524Not reported
2026-09-152026-09-14Favorite Annette FS2,500Not reported
2026-09-152026-09-11Favorite Annette FS2,500Not reported
2026-09-102026-09-08Favorite Annette FS2,500Not reported
2026-09-102026-09-08Favorite Annette FS2,818Not reported
2026-09-102026-09-08Favorite Annette FS2,817Not reported
2026-09-102026-09-08Lagarde MichelA3,600Not reported
2026-09-102026-09-08Lagarde MichelA4,950Not reported
2026-09-102026-09-08Lagarde MichelA6,200Not reported
2026-09-102026-09-08Lagarde MichelA12,088Not reported
2026-09-102026-09-08Lagarde MichelA11,081Not reported
2026-09-102026-09-08Lagarde MichelA13,879Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Cornerstone Financial Management LLC2026-06-302026-08-2962$22,258None
Cornerstone Financial Management LLC2026-03-312026-08-2948$12,031None
Cornerstone Financial Management LLC2025-12-312026-08-2951$14,032None
B. Riley Wealth Advisors, Inc.2025-03-312026-08-292,159$483,347None
Advisors Asset Management, Inc.2021-12-312026-08-2812,311$5,773,982None
Advisors Asset Management, Inc.2022-12-312026-08-287,478$1,759,947None
Advisors Asset Management, Inc.2020-06-302026-08-2820,105$4,567,253None
Advisors Asset Management, Inc.2022-06-302026-08-2810,145$3,068,000None
Advisors Asset Management, Inc.2021-09-302026-08-2812,595$5,347,000None
Corient Private Wealth LP2026-06-302026-08-282,564$920,500None
Corient Private Wealth LP2026-06-302026-08-2861,926$22,231,603None
Principia Wealth Advisory, LLC2026-06-302026-08-2710$3,590None
Principia Wealth Advisory, LLC2026-03-312026-08-272$501None
Advisors Asset Management, Inc.2024-03-312026-08-275,639$2,231,409None
Advisors Asset Management, Inc.2025-03-312026-08-272,872$642,983None
Advisors Asset Management, Inc.2022-09-302026-08-2710,356$2,548,000None
Advisors Asset Management, Inc.2020-12-312026-08-2716,486$4,671,000None
Advisors Asset Management, Inc.2022-03-312026-08-2711,506$4,725,629None
Advisors Asset Management, Inc.2023-06-302026-08-276,160$2,356,015None
Advisors Asset Management, Inc.2023-09-302026-08-276,346$2,381,083None
Advisors Asset Management, Inc.2023-03-312026-08-277,296$2,527,845None
Advisors Asset Management, Inc.2021-03-312026-08-2713,844$3,900,962None
Advisors Asset Management, Inc.2021-06-302026-08-2713,450$4,830,000None
Advisors Asset Management, Inc.2020-09-302026-08-2717,698$4,865,180None
Advisors Asset Management, Inc.2025-09-302026-08-271,467$384,838None
Advisors Asset Management, Inc.2023-12-312026-08-274,994$1,758,487None
Advisors Asset Management, Inc.2019-12-312026-08-2616,834$2,530,655None
Advisors Asset Management, Inc.2025-06-302026-08-251,489$325,793None
CYBER HORNET ETFs LLC2026-06-302026-08-25190$68,210None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25113,071$40,592,489None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2540,592,489$113,071,000None
Advisors Asset Management, Inc.2024-09-302026-08-223,059$918,189None
Advisors Asset Management, Inc.2024-06-302026-08-223,106$1,023,085None
Advisors Asset Management, Inc.2024-12-312026-08-222,937$962,044None
Advisors Asset Management, Inc.2020-03-312026-08-2217,976$2,736,846None
Assenagon Asset Management S.A.2026-06-302026-08-2264,754$23,246,686None
GILL CAPITAL PARTNERS, LLC2026-06-302026-08-2115$5,385None
Archer Investment Corp2026-06-302026-08-201,003$360,110None
STOCK YARDS BANK & TRUST CO2026-06-302026-08-201,066$382,694None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2010,331$3,708,653None
Beacon Pointe Advisors, LLC2026-06-302026-08-19812$290,404None
Advisors Asset Management, Inc.2019-03-312026-08-1914,765$1,627,103None
Advisors Asset Management, Inc.2019-09-302026-08-1916,089$2,281,742None
Advisors Asset Management, Inc.2019-06-302026-08-1914,350$1,795,903None
Liontrust Investment Partners LLP2026-06-302026-08-19402,233$144,401,647None
Ensign Peak Advisors, Inc2026-03-312026-08-1928,409$7,120,432None
Ensign Peak Advisors, Inc2025-12-312026-08-1989,737$24,690,238None
Ensign Peak Advisors, Inc2025-09-302026-08-19103,522$27,156,926None
Fulcrum Asset Management LLP2026-06-302026-08-1932$11,350None
Livforsakringsbolaget Skandia, Omsesidigt2026-06-302026-08-19512$183,808None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗B. Riley Wealth Advisors, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Corient Private Wealth LP ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.