Alexion Pharmaceuticals To Report Third Quarter 2012 Results On Wednesday, October 24, 2012

Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN) today announced that the Company will report its financial results for the third quarter ended September 30, 2012 on Wednesday, October 24, 2012 before the financial markets open. Following the release of the financial results, Alexion management will conduct a conference call and audio web cast on Wednesday, October 24, 2012, at 10:00 a.m. Eastern Time (ET).

To participate in this conference call, dial 888-211-4495 (USA) or 913-312-9330 (International), passcode 4576472 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 4576472. The audio web cast can be accessed at: www.alexionpharma.com.

[ALXN-G]

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