WST · Insider Trading
West Pharmaceutical Services, Inc.
Every open-market purchase and sale reported by WST officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-02 | Janet Brutschea Haugen | Director | A | — | — |
| 2026-09-15 | Annette F Favorite | Sr. VP & Chief HR Officer | MIXED | — | −$2.00M |
| 2026-09-10 | Annette F Favorite | Sr. VP & Chief HR Officer | MIXED | — | −$2.08M |
| 2026-09-10 | Michel Lagarde | President and CEO | A | +51,798 deriv. | — |
| 2026-08-12 | Robert W. McMahon | SVP & Chief Financial Officer | MIXED | +4,040 | −$1.09M |
| 2026-07-01 | Janet Brutschea Haugen | Director | A | — | — |
| 2026-05-14 | Shane Alden Campbell | SVP, Proprietary Segment | MIXED | +550 | −$68.42K |
| 2026-05-06 | Mark A Buthman | Director | A | +791 | — |
| 2026-05-06 | William F Feehery | Director | A | +791 | — |
| 2026-05-06 | Robert F Friel | Director | A | +791 | — |
| 2026-05-06 | Janet Brutschea Haugen | Director | A | +791 | — |
| 2026-05-06 | Molly Joseph | Director | A | +791 | — |
| 2026-05-06 | Deborah L Keller | Director | A | +791 | — |
| 2026-05-06 | Goldman Myla Lai | Director | A | +791 | — |
| 2026-05-06 | Stephen H Lockhart | Director | A | +791 | — |
| 2026-05-06 | Douglas A Michels | Director | A | +791 | — |
| 2026-05-06 | Paolo Pucci | Director | A | +791 | — |
| 2026-04-29 | Chad Winters | VP, Chief Accounting Officer | MIXED | — | −$114.19K |
| 2026-04-29 | Annette F Favorite | Sr. VP & Chief HR Officer | MIXED | — | −$624.62K |
| 2026-04-01 | Janet Brutschea Haugen | Director | A | — | — |
| 2026-03-03 | Chad Winters | VP, Chief Accounting Officer | A | +1,148 deriv. | — |
| 2026-03-03 | Rodolphe Jean Poussot | SVP, Strategy & Corporate Dev | A | +1,477 deriv. | — |
| 2026-03-03 | Robert W. McMahon | SVP & Chief Financial Officer | A | +10,419 deriv. | — |
| 2026-03-03 | Shane Alden Campbell | SVP, Proprietary Segment | A | +3,822 deriv. | — |
| 2026-03-03 | Annette F Favorite | Sr. VP & Chief HR Officer | A | +2,432 deriv. | — |
| 2026-03-03 | Eric Mark Green | President, CEO and Board Chair | A | +23,616 deriv. | — |
| 2026-03-03 | Norman D. Finch Jr. | SVP, GC & Corporate Secretary | A | +4,342 deriv. | — |
| 2026-02-23 | Chad Winters | VP, Chief Accounting Officer | MIXED | +59 | −$7.28K |
| 2026-02-23 | Charles Witherspoon | VP & Treasurer | MIXED | +38 | −$5.32K |
| 2026-02-23 | Rodolphe Jean Poussot | SVP, Strategy & Corporate Dev | MIXED | +253 | −$31.24K |
| 2026-02-19 | Annette F Favorite | Sr. VP & Chief HR Officer | MIXED | +391 | −$45.46K |
| 2026-02-19 | Eric Mark Green | President, CEO and Board Chair | MIXED | +3,858 | −$459.85K |
| 2026-02-19 | Chad Winters | VP, Chief Accounting Officer | MIXED | +99 | −$12.30K |
| 2026-02-19 | Charles Witherspoon | VP & Treasurer | MIXED | +74 | −$10.10K |
| 2026-02-19 | Rodolphe Jean Poussot | SVP, Strategy & Corporate Dev | MIXED | +54 | −$6.90K |
| 2026-02-12 | Robert W. McMahon | SVP & Chief Financial Officer | MIXED | +2,980 | −$307.71K |
| 2026-01-05 | Janet Brutschea Haugen | Director | A | — | — |
| 2025-12-10 | Norman D. Finch Jr. | SVP, GC & Corporate Secretary | A | +651 deriv. | — |
| 2025-10-02 | Janet Brutschea Haugen | Director | A | — | — |
| 2025-08-12 | Robert W. McMahon | SVP & Chief Financial Officer | A | +30,622 deriv. | — |
| 2025-07-01 | Janet Brutschea Haugen | Director | A | — | — |
| 2025-05-14 | Shane Alden Campbell | SVP, Proprietary Segment | A | +5,925 deriv. | — |
| 2025-05-08 | Mark A Buthman | Director | A | +1,071 | — |
| 2025-05-08 | Stephen H Lockhart | Director | A | +1,071 | — |
| 2025-05-08 | William F Feehery | Director | A | +1,071 | — |
| 2025-05-08 | Deborah L Keller | Director | A | +1,071 | — |
| 2025-05-08 | Thomas W Hofmann | Director | A | +1,071 | — |
| 2025-05-08 | Molly Joseph | Director | A | +1,071 | — |
| 2025-05-08 | Goldman Myla Lai | Director | A | +1,071 | — |
| 2025-05-08 | Robert F Friel | Director | A | +1,071 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Eric Mark Green | President, CEO and Board Chair | 175,418 | $69.02M |
| Douglas A Michels | Director | 46,495 | $18.30M |
| Thomas W Hofmann | Director | 44,637 | $17.56M |
| Mark A Buthman | Director | 44,308 | $17.43M |
| William F Feehery | Director | 32,519 | $12.80M |
| Annette F Favorite | Sr. VP & Chief HR Officer | 29,284 | $11.52M |
| Goldman Myla Lai | Director | 20,434 | $8.04M |
| Paolo Pucci | Director | 11,854 | $4.66M |
| Deborah L Keller | Director | 11,560 | $4.55M |
| Bernard Birkett | Sr VP, Chief Financial Officer | 7,555 | $2.97M |
| Robert F Friel | Director | 5,512 | $2.17M |
| Cindy Reiss-Clark | Chief Commercial Officer | 5,130 | $2.02M |
| Molly Joseph | Director | 4,398 | $1.73M |
| Stephen H Lockhart | Director | 3,523 | $1.39M |
| Robert W. McMahon | SVP & Chief Financial Officer | 3,429 | $1.35M |
| Silji Abraham | SVP, Chief Technology Officer | 3,318 | $1.31M |
| Chad Winters | VP, Chief Accounting Officer | 2,418 | $951.75K |
| Janet Brutschea Haugen | Director | 2,114 | $831.89K |
| Kimberly Banks MacKay | SVP, GC & Corporate Secretary | 1,604 | $631.39K |
| Charles Witherspoon | VP & Treasurer | 1,429 | $562.66K |
| Rodolphe Jean Poussot | SVP, Strategy & Corporate Dev | 690 | $271.81K |
| Shane Alden Campbell | SVP, Proprietary Segment | 612 | $241.12K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the WST quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.