=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-08-11
10b5-1 Pre-arranged Plan: No
--- Issuer ---
Name: WEST PHARMACEUTICAL SERVICES INC (WST)
CIK: 0000105770
--- Reporting Owner ---
Name: McMahon Robert W.
CIK: 0001608730
Role: Officer (SVP & Chief Financial Officer)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-08-11 | Code: M (Exercise of derivative)
Shares: +794.469
Shares Owned After: 3,774.96 | Ownership: D (Direct)
Footnotes:
[F1] Each restricted stock unit represents a contingent right to receive one share of WST common stock.
[Transaction #2]
Security: Common Stock
Date: 2026-08-11 | Code: F (Payment of exercise/tax)
Shares: -345.515 | Price: $351.37
Total Value: $121,403.61
Shares Owned After: 3,429.445 | Ownership: D (Direct)
[Transaction #3]
Security: Common Stock
Date: 2026-08-11 | Code: M (Exercise of derivative)
Shares: +6,354.736
Shares Owned After: 9,784.181 | Ownership: D (Direct)
Footnotes:
[F1] Each restricted stock unit represents a contingent right to receive one share of WST common stock.
[Transaction #4]
Security: Common Stock
Date: 2026-08-11 | Code: F (Payment of exercise/tax)
Shares: -2,763.675 | Price: $351.37
Total Value: $971,072.48
Shares Owned After: 7,020.506 | Ownership: D (Direct)
--- Derivative Transactions ---
[Transaction #1]
Security: Rst. Stock Unit
Date: 2026-08-11 | Code: M (Exercise of derivative)
Shares: -6,354.736 | Price: $0.00
Shares Owned After: 2,118.579 | Ownership: D (Direct)
Footnotes:
[F1] Each restricted stock unit represents a contingent right to receive one share of WST common stock.
[F2] On August 11, 2025, the reporting person was granted 12,670 restricted stock units, vesting in three installments - 4,223 shares (plus dividend equivalents) to vest six months from the grant date, 6,335 shares (plus dividend equivalents) to vest 12 months from the grant date and 2,112 shares (plus dividend equivalents) to vest 24 months from the grant date.
[F2] On August 11, 2025, the reporting person was granted 12,670 restricted stock units, vesting in three installments - 4,223 shares (plus dividend equivalents) to vest six months from the grant date, 6,335 shares (plus dividend equivalents) to vest 12 months from the grant date and 2,112 shares (plus dividend equivalents) to vest 24 months from the grant date.
[Transaction #2]
Security: Rst. Stock Unit
Date: 2026-08-11 | Code: M (Exercise of derivative)
Shares: -794.469 | Price: $0.00
Shares Owned After: 2,383.4 | Ownership: D (Direct)
Footnotes:
[F1] Each restricted stock unit represents a contingent right to receive one share of WST common stock.
[F3] This award vests in four equal annual installments beginning on August 11, 2026.
[F3] This award vests in four equal annual installments beginning on August 11, 2026.
--- Footnotes (Complete Index) ---
F1: Each restricted stock unit represents a contingent right to receive one share of WST common stock.
F2: On August 11, 2025, the reporting person was granted 12,670 restricted stock units, vesting in three installments - 4,223 shares (plus dividend equivalents) to vest six months from the grant date, 6,335 shares (plus dividend equivalents) to vest 12 months from the grant date and 2,112 shares (plus dividend equivalents) to vest 24 months from the grant date.
F3: This award vests in four equal annual installments beginning on August 11, 2026.
--- Signature ---
/s/ /s/ Caitlin Hippeli, as an agent for Robert W. McMahon (2026-08-12)
