West Pharmaceutical Services (WST)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-09-08 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: WEST PHARMACEUTICAL SERVICES INC (WST) CIK: 0000105770 --- Reporting Owner --- Name: Lagarde Michel CIK: 0001518973 Role: Director, Officer (President and CEO) --- Derivative Transactions --- [Transaction #1] Security: Stock Option (Right to Buy) Date: 2026-09-08 | Code: A (Grant or award) Shares: +13,879 | Price: $0.00 Exercise Price: $337.75 Exercisable: N/A | Expires: 2036-09-08 Shares Owned After: 13,879 | Ownership: D (Direct) Footnotes: [F1] This award vests in four equal annual installments beginning on September 8, 2027. [Transaction #2] Security: Stock Option (Right to Buy) Date: 2026-09-08 | Code: A (Grant or award) Shares: +11,081 | Price: $0.00 Exercise Price: $337.75 Exercisable: N/A | Expires: 2036-09-08 Shares Owned After: 11,081 | Ownership: D (Direct) Footnotes: [F1] This award vests in four equal annual installments beginning on September 8, 2027. [Transaction #3] Security: Stock Option (Right to Buy) Date: 2026-09-08 | Code: A (Grant or award) Shares: +12,088 | Price: $0.00 Exercise Price: $337.75 Exercisable: N/A | Expires: 2036-09-08 Shares Owned After: 12,088 | Ownership: D (Direct) Footnotes: [F2] This award cliff vests on September 8, 2031. [Transaction #4] Security: Rst. Stock Unit Date: 2026-09-08 | Code: A (Grant or award) Shares: +6,200 | Price: $0.00 Shares Owned After: 6,200 | Ownership: D (Direct) Footnotes: [F3] Each restricted stock unit represents a contingent right to receive one share of WST common stock. [F1] This award vests in four equal annual installments beginning on September 8, 2027. [F1] This award vests in four equal annual installments beginning on September 8, 2027. [Transaction #5] Security: Rst. Stock Unit Date: 2026-09-08 | Code: A (Grant or award) Shares: +4,950 | Price: $0.00 Shares Owned After: 4,950 | Ownership: D (Direct) Footnotes: [F3] Each restricted stock unit represents a contingent right to receive one share of WST common stock. [F1] This award vests in four equal annual installments beginning on September 8, 2027. [F1] This award vests in four equal annual installments beginning on September 8, 2027. [Transaction #6] Security: Rst. Stock Unit Date: 2026-09-08 | Code: A (Grant or award) Shares: +3,600 | Price: $0.00 Shares Owned After: 3,600 | Ownership: D (Direct) Footnotes: [F3] Each restricted stock unit represents a contingent right to receive one share of WST common stock. [F2] This award cliff vests on September 8, 2031. [F2] This award cliff vests on September 8, 2031. --- Footnotes (Complete Index) --- F1: This award vests in four equal annual installments beginning on September 8, 2027. F2: This award cliff vests on September 8, 2031. F3: Each restricted stock unit represents a contingent right to receive one share of WST common stock. --- Signature --- /s/ /s/ Louis Lalli, as an agent for Michel Lagarde (2026-09-10)