WST (West Pharmaceutical Services, Inc.)
Insider Trading Activity
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.
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-12 | Robert W. McMahon | SVP & Chief Financial Officer | MIXED | — | — |
| 2026-07-01 | JANET BRUTSCHEA HAUGEN | Director | A | — | — |
| 2026-05-14 | Shane Alden Campbell | SVP, Proprietary Segment | MIXED | — | — |
| 2026-05-06 | MARK A BUTHMAN | Director | A | — | — |
| 2026-05-06 | William F Feehery | Director | A | — | — |
| 2026-05-06 | ROBERT F FRIEL | Director | A | — | — |
| 2026-05-06 | JANET BRUTSCHEA HAUGEN | Director | A | — | — |
| 2026-05-06 | Molly Joseph | Director | A | — | — |
| 2026-05-06 | Deborah L Keller | Director | A | — | — |
| 2026-05-06 | GOLDMAN MYLA LAI | Director | A | — | — |
| 2026-05-06 | Stephen H Lockhart | Director | A | — | — |
| 2026-05-06 | Douglas A Michels | Director | A | — | — |
| 2026-05-06 | Paolo Pucci | Director | A | — | — |
| 2026-04-29 | Chad Winters | VP, Chief Accounting Officer | MIXED | — | — |
| 2026-04-29 | Annette F Favorite | Sr. VP & Chief HR Officer | MIXED | — | — |
| 2026-04-01 | JANET BRUTSCHEA HAUGEN | Director | A | — | — |
| 2026-03-03 | Chad Winters | VP, Chief Accounting Officer | A | — | — |
| 2026-03-03 | Rodolphe Jean Poussot | SVP, Strategy & Corporate Dev | A | — | — |
| 2026-03-03 | Robert W. McMahon | SVP & Chief Financial Officer | A | — | — |
| 2026-03-03 | Shane Alden Campbell | SVP, Proprietary Segment | A | — | — |
| 2026-03-03 | Annette F Favorite | Sr. VP & Chief HR Officer | A | — | — |
| 2026-03-03 | Eric Mark Green | President, CEO and Board Chair | A | — | — |
| 2026-03-03 | Norman D. Finch Jr. | SVP, GC & Corporate Secretary | A | — | — |
| 2026-02-23 | Chad Winters | VP, Chief Accounting Officer | MIXED | — | — |
| 2026-02-23 | Charles Witherspoon | VP & Treasurer | MIXED | — | — |
| 2026-02-23 | Rodolphe Jean Poussot | SVP, Strategy & Corporate Dev | MIXED | — | — |
| 2026-02-19 | Annette F Favorite | Sr. VP & Chief HR Officer | MIXED | — | — |
| 2026-02-19 | Eric Mark Green | President, CEO and Board Chair | MIXED | — | — |
| 2026-02-19 | Chad Winters | VP, Chief Accounting Officer | MIXED | — | — |
| 2026-02-19 | Charles Witherspoon | VP & Treasurer | MIXED | — | — |
| 2026-02-19 | Rodolphe Jean Poussot | SVP, Strategy & Corporate Dev | MIXED | — | — |
| 2026-02-12 | Robert W. McMahon | SVP & Chief Financial Officer | MIXED | — | — |
| 2026-01-05 | JANET BRUTSCHEA HAUGEN | Director | A | — | — |
| 2025-12-10 | Norman D. Finch Jr. | SVP, GC & Corporate Secretary | A | — | — |
| 2025-10-02 | JANET BRUTSCHEA HAUGEN | Director | A | — | — |
| 2025-08-12 | Robert W. McMahon | SVP & Chief Financial Officer | A | — | — |
| 2025-07-01 | JANET BRUTSCHEA HAUGEN | Director | A | — | — |
| 2025-05-14 | Shane Alden Campbell | SVP, Proprietary Segment | A | — | — |
| 2025-05-08 | MARK A BUTHMAN | Director | A | — | — |
| 2025-05-08 | Stephen H Lockhart | Director | A | — | — |
| 2025-05-08 | William F Feehery | Director | A | — | — |
| 2025-05-08 | Deborah L Keller | Director | A | — | — |
| 2025-05-08 | Thomas W Hofmann | Director | A | — | — |
| 2025-05-08 | Molly Joseph | Director | A | — | — |
| 2025-05-08 | GOLDMAN MYLA LAI | Director | A | — | — |
| 2025-05-08 | ROBERT F FRIEL | Director | A | — | — |
| 2025-05-08 | JANET BRUTSCHEA HAUGEN | Director | A | — | — |
| 2025-05-08 | Paolo Pucci | Director | A | — | — |
| 2025-05-08 | Douglas A Michels | Director | A | — | — |
| 2025-04-02 | JANET BRUTSCHEA HAUGEN | Director | A | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Chair of the Board & CEO | 798,856 | — |
| — | COO & President | 320,085 | — |
| — | Sr. VP & CFO | 271,727 | — |
| — | President, CEO and Board Chair | 175,418 | — |
| — | Sr. VP, Human Resources | 109,975 | — |
| — | President-Delivery Systems | 102,600 | — |
| — | Director | 85,189 | — |
| — | Sr. VP, Gen. Counsel & Sec. | 64,347 | — |
| — | Vice President & Treasurer | 56,422 | — |
| — | Pres. Europe & Asia Pacific | 56,074 | — |
| — | Director | 48,753 | — |
| — | Director | 46,495 | — |
| — | Director | 44,637 | — |
| — | Director | 44,308 | — |
| — | Director | 43,726 | — |
| — | Director | 43,535 | — |
| — | Corporate Controller | 43,050 | — |
| — | President, Pharma Pkgs Systems | 42,394 | — |
| — | Director | 41,890 | — |
| — | President-The Tech Group | 41,835 | — |
| — | Director | 39,974 | — |
| — | Director | 38,874 | — |
| — | Director | 38,163 | — |
| — | Vice President & Controller | 35,755 | — |
| — | Director | 32,519 | — |
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.