UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. )*
AMAG PHARMACEUTICALS, INC.
--------------------------------------------------------------------------------
(Name of Issuer)
Common Stock, Par Value $0.01 Per Share
--------------------------------------------------------------------------------
(Title of Class of Securities)
00163U106
---------
(CUSIP Number)
January 13, 2009
----------------
(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 11
------------------------- ---------------------
CUSIP No. 00163U106 13G Page 2 of 11 Pages
------------------------- ---------------------
---------- ---------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
S.A.C. Capital Advisors, L.P.
---------- ---------------------------------------------------------------------
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
----- ----------------------------------------------------
6 SHARED VOTING POWER
NUMBER OF SHARES
BENEFICIALLY OWNED 215,500 (see Item 4)
BY EACH REPORTING ----- ----------------------------------------------------
PERSON WITH 7 SOLE DISPOSITIVE POWER
0
----- ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
215,500 (see Item 4)
---------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
215,500 (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)
1.3% (see Item 4)
---------- ---------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
---------- ---------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT
Page 2 of 11
------------------------- ---------------------
CUSIP No. 00163U106 13G Page 3 of 11 Pages
------------------------- ---------------------
---------- ---------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
S.A.C. Capital Advisors, Inc.
---------- ---------------------------------------------------------------------
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
----- ----------------------------------------------------
6 SHARED VOTING POWER
NUMBER OF SHARES
BENEFICIALLY OWNED 215,500 (see Item 4)
BY EACH REPORTING ----- ----------------------------------------------------
PERSON WITH 7 SOLE DISPOSITIVE POWER
0
----- ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
215,500 (see Item 4)
---------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
215,500 (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)
1.3% (see Item 4)
---------- ---------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
CO
---------- ---------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT
Page 3 of 11
------------------------- ---------------------
CUSIP No. 00163U106 13G Page 4 of 11 Pages
------------------------- ---------------------
---------- ---------------------------------------------------------------------
1 NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
CR Intrinsic Investors, 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
----- ----------------------------------------------------
6 SHARED VOTING POWER
NUMBER OF SHARES
BENEFICIALLY OWNED 750,000 (see Item 4)
BY EACH REPORTING ----- ----------------------------------------------------
PERSON WITH 7 SOLE DISPOSITIVE POWER
0
----- ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
750,000 (see Item 4)
---------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
750,000 (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)
4.4% (see Item 4)
---------- ---------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
OO
---------- ---------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT
Page 4 of 11
------------------------- ---------------------
CUSIP No. 00163U106 13G Page 5 of 11 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
----- ----------------------------------------------------
6 SHARED VOTING POWER
NUMBER OF SHARES
BENEFICIALLY OWNED 500,000 (see Item 4)
BY EACH REPORTING ----- ----------------------------------------------------
PERSON WITH 7 SOLE DISPOSITIVE POWER
0
----- ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
500,000 (see Item 4)
---------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
500,000 (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)
2.9% (see Item 4)
---------- ---------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
OO
---------- ---------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT
Page 5 of 11
------------------------- ---------------------
CUSIP No. 00163U106 13G Page 6 of 11 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
----- ----------------------------------------------------
6 SHARED VOTING POWER
NUMBER OF SHARES
BENEFICIALLY OWNED 1,465,500 (see Item 4)
BY EACH REPORTING ----- ----------------------------------------------------
PERSON WITH 7 SOLE DISPOSITIVE POWER
0
----- ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
1,465,500 (see Item 4)
---------- ---------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,465,500 (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)
8.6% (see Item 4)
---------- ---------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
---------- ---------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT
Page 6 of 11
Item 1(a) Name of Issuer:
--------------
AMAG Pharmaceuticals, Inc.
Item 1(b) Address of Issuer's Principal Executive Offices:
-----------------------------------------------
100 Hayden Avenue, Lexington, Massachusetts, 02421
Item 2(a) Name of Person Filing:
---------------------
This statement is filed by: (i) SAC Capital Advisors LP with
respect to shares of Common Stock, par value $0.01 per share
("Shares") of the Issuer beneficially owned by S.A.C.
Capital Associates, LLC ("SAC Capital Associates"); (ii)
S.A.C. Capital Advisors, Inc. ("SAC Capital Advisors Inc.")
with respect to Shares beneficially owned by SAC Capital
Advisors LP and SAC Capital Associates; (iii) CR Intrinsic
Investors, LLC ("CR Intrinsic Investors") with respect to
Shares beneficially owned by CR Intrinsic Investments, LLC
("CR Intrinsic Investments"); (iv) Sigma Capital Management,
LLC ("Sigma Management") with respect to Shares beneficially
owned by Sigma Capital Associates, LLC ("Sigma Capital
Associates"); and (v) Steven A. Cohen with respect to Shares
beneficially owned by SAC Capital Advisors LP, SAC Capital
Advisors Inc., SAC Capital Associates, CR Intrinsic
Investors, CR Intrinsic Investments, Sigma Management, and
Sigma Capital Associates.
SAC Capital Advisors LP, SAC Capital Advisors Inc., CR
Intrinsic Investors, Sigma Management and Steven A. Cohen
have entered into a Joint Filing Agreement, a copy of which
is filed with this Schedule 13G as Exhibit 99.1, pursuant to
which they have agreed to file this Schedule 13G jointly in
accordance with the provisions of Rule 13d-1(k) of the Act.
Item 2(b) Address or Principal Business Office:
------------------------------------
The address of the principal business office of (i) SAC
Capital Advisors LP, SAC Capital Advisors Inc., CR Intrinsic
Investors, and Mr. Cohen is 72 Cummings Point Road,
Stamford, Connecticut 06902; and (ii) Sigma Management is
540 Madison Avenue, New York, New York 10022.
Item 2(c) Citizenship:
-----------
SAC Capital Advisors LP is a Delaware limited partnership.
SAC Capital Advisors Inc. is a Delaware corporation. Sigma
Management and CR Intrinsic Investors are Delaware limited
liability companies. Mr. Cohen is a United States citizen.
Item 2(d) Title of Class of Securities:
----------------------------
Common Stock, par value $0.01 per share
Page 7 of 11
Item 2(e) CUSIP Number:
------------
00163U106
Item 3 Not Applicable
Item 4 Ownership:
---------
The percentages used herein are calculated based upon the
Shares issued and outstanding as of October 31, 2008 as
reported on the Issuer's quarterly report on Form 10-Q filed
with the Securities and Exchange Commission by the Issuer
for the quarterly period ended September 30, 2008.
As of the close of business on January 22, 2009:
1. S.A.C. Capital Advisors, L.P.
(a) Amount beneficially owned: 215,500
(b) Percent of class: 1.3%
(c)(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote: 215,500
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition:
215,500
2. S.A.C. Capital Advisors, Inc.
(a) Amount beneficially owned: 215,500
(b) Percent of class: 1.3%
(c)(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote: 215,500
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition:
215,500
3. CR Intrinsic Investors, LLC
(a) Amount beneficially owned: 750,000
(b) Percent of class: 4.4%
(c)(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote: 750,000
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition:
750,000
4. Sigma Capital Management, LLC
(a) Amount beneficially owned: 500,000
(b) Percent of class: 2.9%
(c)(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote: 500,000
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition:
500,000
5. Steven A. Cohen
(a) Amount beneficially owned: 1,465,000
(b) Percent of class: 8.6%
(c)(i) Sole power to vote or direct the vote: -0-
Page 8 of 11
(ii) Shared power to vote or direct the vote: 1,465,000
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition:
1,465,000
SAC Capital Advisors LP, SAC Capital Advisors Inc., CR
Intrinsic Investors, Sigma Management, and Mr. Cohen own
directly no Shares. Pursuant to an investment management
agreement, SAC Capital Advisors LP maintains investment and
voting power with respect to the securities held by SAC
Capital Associates. SAC Capital Advisors Inc. is the general
partner of SAC Capital Advisors LP. Pursuant to an
investment management agreement, Sigma Management maintains
investment and voting power with respect to the securities
held by Sigma Capital Associates. Pursuant to an investment
management agreement, CR Intrinsic Investors maintains
investment and voting power with respect to the securities
held by CR Intrinsic Investments. Mr. Cohen controls each of
SAC Capital Advisors Inc., CR Intrinsic Investors, and Sigma
Management. CR Intrinsic Investments is a wholly owned
subsidiary of SAC Capital Associates. By reason of the
provisions of Rule 13d-3 of the Securities Exchange Act of
1934, as amended, each of (i) SAC Capital Advisors LP, SAC
Capital Advisors Inc. and Mr. Cohen may be deemed to
beneficially own 215,500 Shares (constituting approximately
1.3% of the Shares outstanding); (ii) CR Intrinsic Investors
and Mr. Cohen may be deemed to beneficially own 750,000
Shares (constituting approximately 4.4% of the Shares
outstanding); and (iii) Sigma Management and Mr. Cohen may
be deemed to beneficially own 500,000 Shares (constituting
approximately 2.9% of the Shares outstanding). Each of SAC
Capital Advisors LP, SAC Capital Advisors Inc., CR Intrinsic
Investors, Sigma Management, and Mr. Cohen disclaims
beneficial ownership of any of the securities covered by
this statement, and SAC Capital Associates disclaims
beneficial ownership of any securities held by CR Intrinsic
Investments.
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
Page 9 of 11
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 10 of 11
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 23, 2009
S.A.C. CAPITAL ADVISORS, L.P.
By: /s/ Peter Nussbaum
--------------------------------
Name: Peter Nussbaum
Title: Authorized Person
S.A.C. CAPITAL ADVISORS, INC.
By: /s/ Peter Nussbaum
--------------------------------
Name: Peter Nussbaum
Title: Authorized Person
CR INTRINSIC INVESTORS, 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
STEVEN A. COHEN
By: /s/ Peter Nussbaum
--------------------------------
Name: Peter Nussbaum
Title: Authorized Person
Page 11 of 11