Form Type: 4

SEC EDGAR Link
Accession Number:0000899866-15-000125
Date:2015-05-14
Issuer: ALEXION PHARMACEUTICALS INC (ALXN)
Original Submission Date:

Reporting Person:

MACKAY MARTIN
C/O ALEXION PHARMACEUTICALS, INC
352 KNOTTER DRIVE CHESHIRE, CT 06410

Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
Title of SecurityTransaction Date2a. Deemed Execution Date Transaction CodeSharesAcquired or DisposedPrice per share 5. Amount of Securities Beneficially Owned Following Reported Transaction 6. Ownership Form Direct or IndirectNature of Indirect Ownership
COMMON STOCK, PAR VALUE $.0001 PER SHARE 2015-05-14 S 4,056 d $160.33 32,893 direct
Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, convertible securities
Title of Derivative Security Conversion or Exercise Price of Derivative Security Transaction Date Deemed Execution Date Transaction Code Number of Derivative Securities Acquired (A) or Disposed of (D) Date ExercisableExpiration Date Title and Amount of Securities Underlying Derivative Security Price of Derivative Security Number of derivative Securities Beneficially Owned Following Reported Transaction(s) Ownership Form: Direct (D) or Indirect (I) Nature of Indirect Beneficial Ownership
Footnotes
IDfootnote
f1 this sale was made to cover withholding taxes immediately following the vesting of previously granted restricted stock units.
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