Robert W. McMahon - 01 Mar 2026 Form 4 Insider Report for WEST PHARMACEUTICAL SERVICES INC (WST)

Role: SVP & Chief Financial Officer
Signature: /s/ Caitlin Hippeli, as an agent for Robert W. McMahon
Issuer symbol: WST
Transactions as of: 01 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 03 Mar 2026, 11:26:41 UTC
Previous filing: 12 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
McMahon Robert W.	SVP & Chief Financial Officer	530 HERMAN O. WEST DRIVE, EXTON	/s/ Caitlin Hippeli, as an agent for Robert W. McMahon	03 Mar 2026	0001608730

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	WST	Rst. Stock Unit	Award	$0	+3,082		$0.000000	3,082	01 Mar 2026	Common Stock	3,082		Direct	F1, F2
transaction	WST	Stock Option (Right to Buy)	Award	$0	+7,337		$0.000000	7,337	01 Mar 2026	Common Stock	7,337	$254.34	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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.