West Pharmaceutical Services (WST)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-03-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: WEST PHARMACEUTICAL SERVICES INC (WST) CIK: 0000105770 --- Reporting Owner --- Name: Favorite Annette F CIK: 0001654975 Role: Officer (Sr. VP & Chief HR Officer) --- Derivative Transactions --- [Transaction #1] Security: Rst. Stock Unit Date: 2026-03-01 | Code: A (Grant or award) Shares: +720 | Price: $0.00 Shares Owned After: 720 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of WST common stock. [F2] The restricted stock units vest in four equal annual installments beginning on March 1, 2027. [F2] The restricted stock units vest in four equal annual installments beginning on March 1, 2027. [Transaction #2] Security: Stock Option (Right to Buy) Date: 2026-03-01 | Code: A (Grant or award) Shares: +1,712 | Price: $0.00 Exercisable: N/A | Expires: 2036-03-01 Shares Owned After: 1,712 | Ownership: D (Direct) Footnotes: [F3] The stock option vests in four equal annual installments beginning on March 1, 2027. --- Footnotes (Complete Index) --- F1: Each restricted stock unit represents a contingent right to receive one share of WST common stock. F2: The restricted stock units vest in four equal annual installments beginning on March 1, 2027. F3: The stock option vests in four equal annual installments beginning on March 1, 2027. --- Signature --- /s/ /s/ Caitlin Hippeli, as an agent for Annette Favorite (2026-03-03)