Press Releases
September 7, 2010

Alexion to Present at Investor Conferences

CHESHIRE, Conn., Sep 07, 2010 (BUSINESS WIRE) -- Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN) today announced that management will present at two upcoming investor conferences:

Dr. Leonard Bell, Chief Executive Officer of Alexion, will present at the Morgan Stanley Global Healthcare Conference in New York on Monday, September 13th at 3:20 p.m., Eastern Time.

Mr. Vikas Sinha, Chief Financial Officer of Alexion, will present at the Stifel Nicolaus 2010 Healthcare Conference in New York on Thursday, September 16th at 2:05 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 An archived version of the remarks will also be available through the Company's web site for a limited time following the conference.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]

SOURCE: Alexion Pharmaceuticals, Inc.

Alexion Pharmaceuticals, Inc.
Irving Adler
Sr. Director, Corporate Communications
203-271-8210
or
Makovsky + Company
Mark Marmur (Media)
212-508-9670
or
Rx Communications
Rhonda Chiger (Investor)
917-322-2569

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