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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
899866	Alexion Pharmaceuticals Inc	ALXN	Pharmaceutical Preparations (2834)	133648318

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1491435	Ludwig Hantson	C/O Alexion Pharmaceuticals, Inc. 100 College Street New Haven CT 06510	Ceo	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock, Par Value $.0001 Per Share	Acquisiton	2018-02-06	95,253	$0.00	131,425	No	4	A	Direct
Common Stock, Par Value $.0001 Per Share	Disposition	2018-02-08	13,245	$116.31	118,180	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	A	Direct
No	4	S	Direct

Footnotes

On February 6, 2018, the Leadership and Compensation Committee determined that the reporting person earned 95,253 Performance Share Units upon achievement of certain performance targets previously established by the Committee. 1/3 of such shares vested on February 6, 2018 and 1/3 vest on each subsequent anniversary.
This sale was made to cover withholding taxes immediately following the vesting of previously granted Performance Stock Units.
This transaction was executed in multiple trades through a broker-dealer at prices ranging from $116.00 - $116.99. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of shares sold at each price.