UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. )*
Alexion Pharmaceuticals, Inc.
- --------------------------------------------------------------------------------
(Name of Issuer)
Common Stock, $.0001 Par Value Per Share
- --------------------------------------------------------------------------------
(Title of Class of Securities)
01531109
--------
(CUSIP Number)
December 29, 2004
-----------------
(Date of Event which Requires Filing
of this Statement)
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 the
disclosures provided in a prior cover page.
The information required on 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).
Page 1 of 13
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CUSIP No. 01531109 13G Page 2 of 13 Pages
- ------------------ ------------------
- ---------- ---------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
S.A.C. Capital Advisors, LLC
- ---------- ---------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ]
(b) [X]
- ---------- ---------------------------------------------------------------------
3 SEC USE ONLY
- ---------- ---------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
- --------------------- ----- ----------------------------------------------------
5 SOLE VOTING POWER
0
NUMBER OF ----- ----------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED 38,150 (see Item 4)
BY ----- ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0
WITH ----- ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
38,150 (see Item 4)
- ---------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
38,150 (see Item 4)
- ---------- ---------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
[ ]
- ---------- ---------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
Less than 0.1% (see Item 4)
- ---------- ---------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
00
- ---------- ---------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT
Page 2 of 13
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CUSIP No. 01531109 13G Page 3 of 13 Pages
- ------------------ ------------------
- ---------- ---------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
S.A.C. Capital Management, LLC
- ---------- ---------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ]
(b) [X]
- ---------- ---------------------------------------------------------------------
3 SEC USE ONLY
- ---------- ---------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
- --------------------- ----- ----------------------------------------------------
5 SOLE VOTING POWER
0
NUMBER OF ----- ----------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED 38,150 (see Item 4)
BY ----- ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0
WITH ----- ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
38,150 (see Item 4)
- ---------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
38,150 (see Item 4)
- ---------- ---------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
[ ]
- ---------- ---------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
Less than 0.1% (see Item 4)
- ---------- ---------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
00
- ---------- ---------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT
Page 3 of 13
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CUSIP No. 01531109 13G Page 4 of 13 Pages
- ------------------ ------------------
- ---------- ---------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
S.A.C. MultiQuant Fund, LLC
- ---------- ---------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ]
(b) [X]
- ---------- ---------------------------------------------------------------------
3 SEC USE ONLY
- ---------- ---------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Anguilla, British West Indies
- --------------------- ----- ----------------------------------------------------
5 SOLE VOTING POWER
0
NUMBER OF ----- ----------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED 38,150 (see Item 4)
BY ----- ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0
WITH ----- ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
38,150 (see Item 4)
- ---------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
38,150 (see Item 4)
- ---------- ---------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
[ ]
- ---------- ---------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
Less than 0.1% (see Item 4)
- ---------- ---------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
00
- ---------- ---------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT
Page 4 of 13
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CUSIP No. 01531109 13G Page 5 of 13 Pages
- ------------------ ------------------
- ---------- ---------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Sigma Capital Management, LLC
- ---------- ---------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ]
(b) [X]
- ---------- ---------------------------------------------------------------------
3 SEC USE ONLY
- ---------- ---------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
- -------------------- ------ ----------------------------------------------------
5 SOLE VOTING POWER
0
NUMBER OF ------ ----------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED 1,471,520 (see Item 4)
BY ------ ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0
WITH ------ ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
1,471,520 (see Item 4)
- ---------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,471,520 (see Item 4)
- ---------- ---------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
[ ]
- ---------- ---------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
5.3% (see Item 4)
- ---------- ---------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
00
- ---------- ---------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT
Page 5 of 13
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CUSIP No. 01531109 13G Page 6 of 13 Pages
- ------------------ ------------------
- ---------- ---------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Sigma Capital Associates, LLC
- ---------- ---------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ]
(b) [X]
- ---------- ---------------------------------------------------------------------
3 SEC USE ONLY
- ---------- ---------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Anguilla, British West Indies
- -------------------- ------ ----------------------------------------------------
5 SOLE VOTING POWER
0
NUMBER OF ------ ----------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED 1,471,520 (see Item 4)
BY ------ ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0
WITH ------ ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
1,471,520 (see Item 4)
- ---------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,471,520 (see Item 4)
- ---------- ---------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
[ ]
- ---------- ---------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
5.3% (see Item 4)
- ---------- ---------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
00
- ---------- ---------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT
Page 6 of 13
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CUSIP No. 01531109 13G Page 7 of 13 Pages
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- ---------- ---------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Steven A. Cohen
- ---------- ---------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [ ]
(b) [X]
- ---------- ---------------------------------------------------------------------
3 SEC USE ONLY
- ---------- ---------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States
- -------------------- ------ ----------------------------------------------------
5 SOLE VOTING POWER
0
NUMBER OF ------ ----------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED 1,509,670 (see Item 4)
BY ------ ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0
WITH ------ ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
1,509,670 (see Item 4)
- ---------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,509,670 (see Item 4)
- ---------- ---------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
- ---------- ---------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
5.4% (see Item 4)
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12 TYPE OF REPORTING PERSON*
IN
- ---------- ---------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT
Page 7 of 13
Item 1(a) Name of Issuer:
---------------
Alexion Pharmaceuticals, Inc.
Item 1(b) Address of Issuer's Principal Executive Offices:
------------------------------------------------
352 Knotter Drive
Cheshire, Connecticut 06410
Items 2(a) Name of Person Filing:
This statement is filed by: (i) S.A.C. Capital Advisors,
LLC, ("SAC Capital Advisors") with respect to shares of
common stock, $.0001 par value per share ("Shares") of the
Issuer beneficially owned by S.A.C. MultiQuant Fund, LLC
("SAC MultiQuant"); (ii) S.A.C. Capital Management, LLC,
("SAC Capital Management") with respect to Shares
beneficially owned by SAC MultiQuant; (iii) SAC MultiQuant
with respect to Shares beneficially owned by it; (iv) Sigma
Capital Management, LLC ("Sigma Capital Management") with
respect to Shares beneficially owned by Sigma Capital
Associates, LLC ("Sigma Capital Associates"); (v) Sigma
Capital Associates with respect to Shares beneficially owned
by it; and (vi) Steven A. Cohen with respect to Shares
beneficially owned by SAC Capital Advisors, SAC Capital
Management, SAC MultiQuant, Sigma Capital Management and
Sigma Capital Associates.
Item 2(b) Address of Principal Business Office:
-------------------------------------
The address of the principal business office of (i) SAC
Capital Advisors and Mr. Cohen is 72 Cummings Point Road,
Stamford, Connecticut 06902, (ii) SAC Capital Management and
Sigma Capital Management is 540 Madison Avenue, New York,
New York 10022, and (iii) SAC MultiQuant and Sigma Capital
Associates is P.O. Box 58, Victoria House, The Valley,
Anguilla, British West Indies.
Item 2(c) Citizenship:
------------
SAC Capital Advisors, SAC Capital Management and Sigma
Capital Management are Delaware limited liability companies.
SAC MultiQuant and Sigma Capital Associates are Anguillan
limited liability companies. Mr. Cohen is a United States
citizen.
Page 8 of 13
Item 2(d) Title of Class of Securities:
-----------------------------
Common Stock, par value $.0001 per share
Item 2(e) CUSIP Number:
-------------
01531109
Item 3 Not Applicable
Item 4 Ownership:
----------
The percentages used herein are calculated based upon the
Shares issued and outstanding as of November 30, 2004 as
reported on the Issuers's quarterly report on Form 10-Q
filed with the Securities and Exchange Commission by the
Company for the quarterly period ended October 31, 2004.
As of the close of business on January 6, 2005:
1. S.A.C. Capital Advisors, LLC
(a) Amount beneficially owned: 38,150
(b) Percent of class: Less than 0.1%
(c)(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote: 38,150
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition:
38,150
2. S.A.C. Capital Management, LLC
(a) Amount beneficially owned: 38,150
(b) Percent of class: Less than 0.1%
(c)(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote: 38,150
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition:
38,150
3. S.A.C. MultiQuant Fund, LLC
(a) Amount beneficially owned: 38,150
(b) Percent of class: Less than 0.1%
(c)(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote: 38,150
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition:
38,150
Page 9 of 13
4. Sigma Capital Management, LLC
(a) Amount beneficially owned: 1,471,520
(b) Percent of class: 5.3%
(c)(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote: 1,471,520
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition:
1,471,520
5. Sigma Capital Associates, LLC
(a) Amount beneficially owned: 1,471,520
(b) Percent of class: 5.3%
(c)(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote: 1,471,520
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition:
1,471,520
6. Steven A. Cohen
(a) Amount beneficially owned: 1,509,670
(b) Percent of class: 5.4%
(c)(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote: 1,509,670
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition:
1,509,670
SAC Capital Advisors, SAC Capital Management, Sigma Capital
Management, and Mr. Cohen own directly no Shares. Pursuant
to investment agreements, each of SAC Capital Advisors and
SAC Capital Management share all investment and voting power
with respect to the securities held by SAC MultiQuant.
Pursuant to an investment management agreement, Sigma
Capital Management maintains investment and voting power
with respect to the securities held by Sigma Capital
Associates. Mr. Cohen controls each of SAC Capital Advisors,
SAC Capital Management and Sigma Capital Management. By
reason of the provisions of Rule 13d-3 of the Securities
Exchange Act of 1934, as amended, each of (i) SAC Capital
Advisors, SAC Capital Management and Mr. Cohen may be deemed
to own beneficially 38,150 Shares (constituting less than
0.1% of the Shares outstanding) and (ii) Sigma Capital
Management and Mr. Cohen may be deemed to own beneficially
1,471,520 Shares (constituting approximately 5.3% of the
Shares outstanding). Each of SAC Capital Advisors, SAC
Capital Management, Sigma Capital Management and Mr. Cohen
disclaim beneficial ownership of any of the securities
covered by this statement.
Page 10 of 13
Item 5 Ownership of Five Percent or Less of a Class:
---------------------------------------------
If this statement is being filed to report the fact that as
of the date hereof the reporting person has ceased to be the
beneficial owner of more than five percent of the class of
securities, check the following. [ ]
Item 6 Ownership of More than Five Percent on Behalf of Another
--------------------------------------------------------
Person:
-------
Not Applicable
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
Item 10 Certification:
--------------
By signing below the signatory certifies that, to the best of his 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 11 of 13
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: January 7, 2005
S.A.C. CAPITAL ADVISORS, LLC
By: /s/ Peter Nussbaum
------------------------------
Name: Peter Nussbaum
Title: Authorized Person
S.A.C. CAPITAL MANAGEMENT, LLC
By: /s/ Peter Nussbaum
------------------------------
Name: Peter Nussbaum
Title: Authorized Person
S.A.C. MULTIQUANT FUND, LLC
By: /s/ Peter Nussbaum
------------------------------
Name: Peter Nussbaum
Title: Authorized Person
SIGMA CAPITAL MANAGEMENT, LLC
By: /s/ Peter Nussbaum
------------------------------
Name: Peter Nussbaum
Title: Authorized Person
SIGMA CAPITAL ASSOCIATES, LLC
By: /s/ Peter Nussbaum
------------------------------
Name: Peter Nussbaum
Title: Authorized Person
Page 12 of 13
STEVEN A. COHEN
By: /s/ Peter Nussbaum
------------------------------
Name: Peter Nussbaum
Title: Authorized Person
Page 13 of 13