Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN) today announced that the Company will report its financial results for the fourth quarter and year ended December 31, 2012 on Thursday, February 14, 2013 before the US financial markets open. Following the release of the financial results, Alexion management will conduct a conference call and audio web cast on Thursday, February 14, 2013, at 10:00 a.m. Eastern Time (ET).

To participate in this conference call, dial 888-206-4836 (USA) or 913-312-1267 (International), passcode 5044697 shortly before 10:00 a.m. ET. A replay of the call will be available from 1:00 p.m. ET through a limited time thereafter. The replay number is 888-203-1112 (USA) or 719-457-0820 (International), passcode 5044697. The audio web cast can be accessed at: www.alexionpharma.com.

[ALXN-G]

Alexion Pharmaceuticals, Inc.
Irving Adler, 203-271-8210
Executive Director, Corporate Communications
or
Media:
Alexion Pharmaceuticals, Inc.
Kim Diamond, 203-439-9600
Director, Corporate Communications
or
Investors:
Rx Communications
Rhonda Chiger, 917-322-2569