Press Releases
May 29, 2012

Alexion to Present at Investor Conferences

CHESHIRE, Conn.--(BUSINESS WIRE)-- Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN) today announced that management will present at two upcoming investor conferences:

Mr. Vikas Sinha, Chief Financial Officer of Alexion, will present at the Jefferies 2012 Global Healthcare Conference in New York on Monday, June 4th at 10:30 a.m., Eastern Time.

Dr. Leonard Bell, Chief Executive Officer of Alexion, will present at the Goldman Sachs 33rd Annual Global Healthcare Conference in Rancho Palos Verdes, CA on Tuesday, June 5th at 1:20 p.m., Pacific Time (4:20 p.m., Eastern time).

An audio webcast of each presentation will be available live. You can access the webcasts at: www.alexionpharma.com. An archived version of the remarks will also be available through the Company's web site for a limited time following the conference.

[ALXN-G]

Alexion Pharmaceuticals, Inc.
Irving Adler
Sr. Director, Corporate Communications
203-271-8210
or
Alexion Pharmaceuticals, Inc.
Kim Diamond (Media)
Director, Corporate Communications
203-439-9600
or
Rx Communications
Rhonda Chiger (Investor)
917-322-2569

Source: Alexion Pharmaceuticals, Inc.

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