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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Alexion Pharmaceuticals, Inc.
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(Name of Issuer)
Common Stock, $0.0001 par value
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(Title of Class of Securities)
015351109
-----------------------------------
(CUSIP Number)
January 28, 2005
-----------------------------------
(Date of Event which Requires Filing of this Statement)
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Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
|_| Rule 13d-1(b)
|X| Rule 13d-1(c)
|_| Rule 13d-1(d)
* The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that
section of the Act but shall be subject to all other provisions of the Act
(however, see the Notes).
------------------------------- ----------------------
CUSIP NO. 015351109 13G PAGE 2 OF 9 PAGES
------------------------------- ----------------------
--------- ---------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Ziff Asset Management, L.P.
--------- ---------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(SEE INSTRUCTIONS) (A) |_|
(B) |_|
--------- ---------------------------------------------------------------------
3 SEC USE ONLY
--------- ---------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
------ ------------------------------------------------
5 SOLE VOTING POWER
NUMBER OF 0
SHARES
------ ------------------------------------------------
6 SHARED VOTING POWER
BENEFICIALLY
1,677,773
OWNED BY
------ ------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
0
REPORTING
------ ------------------------------------------------
PERSON 8 SHARED DISPOSITIVE POWER
WITH
1,677,773
--------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,677,773
--------- ---------------------------------------------------------------------
10 CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
(SEE INSTRUCTIONS) |_|
--------- ---------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
6.03%
--------- ---------------------------------------------------------------------
12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
PN
--------- ---------------------------------------------------------------------
------------------------------- ----------------------
CUSIP NO. 015351109 13G PAGE 3 OF 9 PAGES
------------------------------- ----------------------
--------- ---------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
PBK Holdings, Inc.
--------- ---------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(SEE INSTRUCTIONS) (A) |_|
(B) |_|
--------- ---------------------------------------------------------------------
3 SEC USE ONLY
--------- ---------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
------ ------------------------------------------------
5 SOLE VOTING POWER
NUMBER OF 0
SHARES
------ ------------------------------------------------
6 SHARED VOTING POWER
BENEFICIALLY
1,677,773
OWNED BY
------ ------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
0
REPORTING
------ ------------------------------------------------
PERSON 8 SHARED DISPOSITIVE POWER
WITH
1,677,773
--------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,677,773
--------- ---------------------------------------------------------------------
10 CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
(SEE INSTRUCTIONS) |_|
--------- ---------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
6.03%
--------- ---------------------------------------------------------------------
12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
CO
--------- ---------------------------------------------------------------------
------------------------------- ----------------------
CUSIP NO. 015351109 13G PAGE 4 OF 9 PAGES
------------------------------- ----------------------
--------- ---------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Philip B. Korsant
--------- ---------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(SEE INSTRUCTIONS) (A) |_|
(B) |_|
--------- ---------------------------------------------------------------------
3 SEC USE ONLY
--------- ---------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States of America
------ ------------------------------------------------
5 SOLE VOTING POWER
NUMBER OF 0
SHARES
------ ------------------------------------------------
6 SHARED VOTING POWER
BENEFICIALLY
1,677,773
OWNED BY
------ ------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
0
REPORTING
------ ------------------------------------------------
PERSON 8 SHARED DISPOSITIVE POWER
WITH
1,677,773
--------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,677,773
--------- ---------------------------------------------------------------------
10 CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
(SEE INSTRUCTIONS) |_|
--------- ---------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
6.03%
--------- ---------------------------------------------------------------------
12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
IN
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Page 5 of 9 Pages
ITEM 1. (A) NAME OF ISSUER
Alexion Pharmaceuticals, Inc.
ITEM 1. (B) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES
352 Knotter Drive
Cheshire, CT 06410
ITEM 2. (A) NAME OF PERSON FILING
This Schedule 13G is being filed on behalf of the following persons (the
"Reporting Persons")*:
(i) Ziff Asset Management, L.P. ("ZAM");
(ii) PBK Holdings, Inc. ("PBK"); and
(iii) Philip B. Korsant
* Attached as Exhibit A is a copy of an agreement among the Reporting
Persons that this Schedule 13G is being filed on behalf of each of them.
ITEM 2. (B) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE
Ziff Asset Management, L.P.
283 Greenwich Avenue
Greenwich, CT 06830
PBK Holdings, Inc.
283 Greenwich Avenue
Greenwich, CT 06830
Philip B. Korsant
283 Greenwich Avenue
Greenwich, CT 06830
ITEM 2. (C) CITIZENSHIP
See Item 4 of the attached cover pages.
ITEM 2. (D) TITLE OF CLASS OF SECURITIES
Common Stock, $0.0001 par value
ITEM 2. (E) CUSIP NUMBER
015351109
ITEM 3.
Not applicable as this Schedule 13G is filed pursuant to Rule 13d-1(c).
Page 6 of 9 Pages
ITEM 4. OWNERSHIP
(a) Amount beneficially owned:
See Item 9 of the attached cover pages.
(b) Percent of class:
See Item 11 of the attached cover pages.
(c) Number of shares as to which such person has:
(i) Sole power to vote or to direct the vote:
See Item 5 of the attached cover pages.
(ii) Shared power to vote or to direct the vote:
See Item 6 of the attached cover pages.
(iii) Sole power to dispose or to direct the disposition:
See Item 7 of the attached cover pages.
(iv) Shared power to dispose or to direct the disposition:
See Item 8 of the attached cover pages.
ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS
Not Applicable.
ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON
Philip B. Korsant shares voting and dispositive power over the shares of
Common Stock that he beneficially owns with ZAM, the owner of record of the
shares of Common Stock. PBK also shares voting and dispositive power over
the shares of Common Stock that it beneficially owns with ZAM.
ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH
ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT
HOLDING COMPANY
Not Applicable.
ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP
Not Applicable.
ITEM 9. NOTICE OF DISSOLUTION OF GROUP
Not Applicable.
Page 7 of 9 Pages
ITEM 10. CERTIFICATION
By signing below I certify that, to the best of my knowledge and belief,
the securities referred to above were not acquired and are not held for the
purpose of or with the effect of changing or influencing the control of the
issuer of the securities and were not acquired and are not held in
connection with or as a participant in any transaction having that purpose
or effect.
Page 8 of 9 Pages
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete
and correct.
Dated: February 4, 2005
ZIFF ASSET MANAGEMENT, L.P.
By: PBK Holdings, Inc., its general
partner
By: /s/ DAVID GRAY
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Name: David Gray
Title: Vice President
PBK HOLDINGS, INC.
By: /s/ DAVID GRAY
------------------------------------
Name: David Gray
Title: Vice President
/s/ PHILIP B. KORSANT
------------------------------------
Philip B. Korsant