West Pharmaceutical Services Inc (WST) Insider Ownership

Historic Insider Ownership Trends

WST's three largest insider shareholders as of March 23, 2026 are Eric Mark Green (President, Ceo And Board Chair, 175.16K shares), Patrick J Zenner (Director, 67.51K shares), Douglas A Michels (Director, 45.17K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Eric Mark Green President, Ceo And Board Chair 175,161 0 19 Feb, 2026
Patrick J Zenner 67,509 0 06 May, 2021
Douglas A Michels 45,171 0 08 May, 2025
Thomas W Hofmann 44,637 0 08 May, 2025
Mark A Buthman 42,861 0 08 May, 2025
William F Feehery 31,363 0 08 May, 2025
Goldman Myla Lai 19,424 0 08 May, 2025
Annette F Favorite Sr. Vp Chief Hr Officer 17,374 0 19 Feb, 2026
David A Montecalvo Svp, Glob Ops And Supply Chain 13,731 0 24 Feb, 2022
Paolo Pucci 10,947 0 08 May, 2025
Deborah L Keller 10,657 0 08 May, 2025
Bernard Birkett Sr Vp, Chief Financial Officer 7,520 0 20 Feb, 2025
Cindy Reiss-Clark Chief Commercial Officer 5,047 0 20 Feb, 2025
Robert F Friel 4,682 0 08 May, 2025
Quintin J Lai Vp Strat Investor Relations 4,359 0 22 Feb, 2024
Silji Abraham Svp, Chief Technology Officer 3,138 0 31 Oct, 2024
Robert W. Mcmahon Svp Chief Financial Officer 2,980 0 12 Feb, 2026
Molly Joseph 2,884 0 08 May, 2025
Stephen H Lockhart 2,708 0 08 May, 2025
Chad Winters Vp, Chief Accounting Officer 1,523 0 23 Feb, 2026
Kimberly Banks Mackay Svp, Gc Corporate Secretary 1,512 0 20 Feb, 2025
Charles Witherspoon Vp Treasurer 1,408 0 23 Feb, 2026
Janet Brutschea Haugen 1,318 0 08 May, 2025
Rodolphe Jean Poussot Svp, Strategy Corporate Dev 561 0 23 Feb, 2026

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
01 Mar, 2026 Eric Mark Green Rst. Stock Unit A 6,986 $0.00 6,986 D A
01 Mar, 2026 Rodolphe Jean Poussot Rst. Stock Unit A 437 $0.00 437 D A
01 Mar, 2026 Chad Winters Rst. Stock Unit A 340 $0.00 340 D A
01 Mar, 2026 Annette F Favorite Rst. Stock Unit A 720 $0.00 720 D A
01 Mar, 2026 Norman D. Jr. Finch Rst. Stock Unit A 1,285 $0.00 1,285 D A
01 Mar, 2026 Robert W. Mcmahon Rst. Stock Unit A 3,082 $0.00 3,082 D A
01 Mar, 2026 Shane Alden Campbell Rst. Stock Unit A 1,131 $0.00 1,131 D A
01 Mar, 2026 Norman D. Jr. Finch Stock Option (Right to Buy) A 3,057 $0.00 3,057 D A
01 Mar, 2026 Chad Winters Stock Option (Right to Buy) A 808 $0.00 808 D A
01 Mar, 2026 Shane Alden Campbell Stock Option (Right to Buy) A 2,691 $0.00 2,691 D A
01 Mar, 2026 Rodolphe Jean Poussot Stock Option (Right to Buy) A 1,040 $0.00 1,040 D A
01 Mar, 2026 Annette F Favorite Stock Option (Right to Buy) A 1,712 $0.00 1,712 D A
01 Mar, 2026 Robert W. Mcmahon Stock Option (Right to Buy) A 7,337 $0.00 7,337 D A
01 Mar, 2026 Eric Mark Green Stock Option (Right to Buy) A 16,630 $0.00 16,630 D A
20 Feb, 2026 Charles Witherspoon Common Stock A 60 - 1,430 D M
20 Feb, 2026 Chad Winters Common Stock A 89 - 1,553 D M
20 Feb, 2026 Rodolphe Jean Poussot Common Stock A 383 - 691 D M
20 Feb, 2026 Chad Winters Common Stock D 30 $241.12 1,523 D F
20 Feb, 2026 Charles Witherspoon Common Stock D 22 $241.12 1,408 D F
20 Feb, 2026 Rodolphe Jean Poussot Common Stock D 130 $241.12 561 D F