WEST PHARMACEUTICAL SERVICES INC — Director's Dealing 2011

May 4, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WEST PHARMACEUTICAL SERVICES INC (WST)
CIK: 0000105770
Period of Report: 2011-05-04

Reporting Person: GAILEY JOHN R (VP, Gen. Counsel & Sec.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-04	Common Stock	M	14600.0000	$19.3650	Acquired	37701.9673	Direct
2011-05-04	Common Stock	S	14600.0000	$46.9202	Disposed	23101.9673	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-04	Stock Option (Right to Buy)	$19.3650	M	14600.0000	Disposed	2015-05-05	Common Stock (14600.0000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	702.3053	Indirect
Common Stock	9685.1447	Indirect

Footnotes

F1: Reflects additional shares purchased through dividend reinvestments based on most recent plan statement.