Alexion Update Regarding Presentations at Investor Conferences

  Alexion Update Regarding Presentations at Investor Conferences

Business Wire

CHESHIRE, Conn. -- June 10, 2013

Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN) today announced an update on one
of two previously announced management presentations at upcoming investor

Dr. Leonard Bell, Chief Executive Officer of Alexion, will present at the
Goldman Sachs 34th Annual Global Healthcare Conference in Rancho Palos Verdes,
CA on Wednesday, June 12th at 8:40 a.m., Pacific Time (11:40 a.m., Eastern

However, due to an unforeseen scheduling conflict, an Alexion representative
will be unable to present at the William Blair 33rdAnnual Growth Stock
Conference in Chicago, scheduled for later this week.

An audio webcast of the June 12^th presentation at Goldman Sachs will be
available live. You can access the webcast at: An
archived version of the remarks will also be available through the Company’s
web site for a limited time following the conference.



Alexion Pharmaceuticals, Inc.
Irving Adler, 203-271-8210
Executive Director, Corporate Communications
Rx Communications
Rhonda Chiger, 917-322-2569
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