UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
_______________________
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(D) OF THE
THE SECURITIES EXCHANGE ACT OF 1934
Date of report (Date of earliest event reported): January 25, 2013
    
ALEXION PHARMACEUTICALS, INC.
-----------------------------------------------------------
(Exact name of registrant as specified in its charter)

Delaware
000-27756
13-3648318
------------------
------------------
---------------
(State or other jurisdiction of
of incorporation or organization)
(Commission
File Number)
(I.R.S. Employer
Identification No.)


352 Knotter Drive, Cheshire, Connecticut 06410
---------------------------------------------------------------
(Address of Principal Executive Offices) (Zip Code)

Registrant’s telephone number, including area code:    (203) 272-2596
   Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

¨
Written communications pursuant to Rule 425 under the Securities Act
(17 CFR 230.425)
¨
Soliciting material pursuant to Rule 14a-12 under the Exchange Act
(17 CFR 240.14a-12)
¨
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act
(17 CFR 240.14d-2(b))
¨

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act
(17 CFR 240.13e-4(c))







Item 5.02.    Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.


Mr. Patrice Coissac, Senior Vice President of Alexion Pharmaceuticals, Inc. and President of Alexion Pharma International Sàrl, Alexion's subsidiary located in Lausanne, Switzerland, will retire from Alexion effective February 8, 2013. Mr. Coissac joined Alexion in November 2005 as Senior Vice President and President of Alexion Europe SAS and has served as President of Alexion Pharma International Sàrl since April 2009.

Mr. Coissac's responsibilities have been assumed by Mr. Frank Wright, who joined Alexion as Senior Vice President in December 2012. Mr. Wright will also be appointed the President of Alexion Pharma International Sàrl.




Signature
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
 
 
 
Date: January 25, 2013
 
ALEXION PHARMACEUTICALS, INC.
 
 
 
 
 
By:  /s/ Michael V. Greco
 
 
Name: Michael V. Greco
 
 
Title: Associate General Counsel and Corporate Secretary