SECURITIES & EXCHANGE COMMISSION
Washington, D.C. 20549
----------------------
SCHEDULE 13G
(Rule 13d-102)
INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
TO RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED
PURSUANT TO 13d-2(b)
(Amendment No.)*
Ironwood Pharmaceuticals, Inc.
(Name of Issuer)
Common Stock
(Title of Class of Securities)
46333X108
(CUSIP Number)
February 11, 2010
(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) (Hedge Funds generally check the (c) box)
[ ] Rule 13d-1(d)
(Page 1 of 14 Pages)
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*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 in the remainder of this cover page shall not be
deemed to be "filed" for purposes 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. 46333X108 13G Page 2 of 13 Pages
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(1) NAMES OF REPORTING PERSONS
Adage Capital Partners, L.P.
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(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
(a) [ ]
(b) [X]
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(3) SEC USE ONLY
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(4) CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
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NUMBER OF (5) SOLE VOTING POWER
-0-
SHARES --------------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
929,600
OWNED BY --------------------------------------------------------------
EACH (7) SOLE DISPOSITIVE POWER
-0-
REPORTING --------------------------------------------------------------
PERSON WITH (8) SHARED DISPOSITIVE POWER
929,600
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(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
929,600
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(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ]
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(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
5.6%
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(12) TYPE OF REPORTING PERSON **
PN
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** SEE INSTRUCTIONS BEFORE FILLING OUT!
CUSIP No. 46333X108 13G Page 3 of 13 Pages
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(1) NAMES OF REPORTING PERSONS
Adage Capital Partners GP, L.L.C.
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(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
(a) [ ]
(b) [X]
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(3) SEC USE ONLY
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(4) CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
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NUMBER OF (5) SOLE VOTING POWER
-0-
SHARES --------------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
929,600
OWNED BY --------------------------------------------------------------
EACH (7) SOLE DISPOSITIVE POWER
-0-
REPORTING --------------------------------------------------------------
PERSON WITH (8) SHARED DISPOSITIVE POWER
929,600
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(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
929,600
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(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ]
-----------------------------------------------------------------------------
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
5.6%
-----------------------------------------------------------------------------
(12) TYPE OF REPORTING PERSON **
OO
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** SEE INSTRUCTIONS BEFORE FILLING OUT!
CUSIP No. 46333X108 13G Page 4 of 13 Pages
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(1) NAMES OF REPORTING PERSONS
Adage Capital Advisors, L.L.C.
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(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
(a) [ ]
(b) [X]
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(3) SEC USE ONLY
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(4) CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
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NUMBER OF (5) SOLE VOTING POWER
-0-
SHARES --------------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
929,600
OWNED BY --------------------------------------------------------------
EACH (7) SOLE DISPOSITIVE POWER
-0-
REPORTING --------------------------------------------------------------
PERSON WITH (8) SHARED DISPOSITIVE POWER
929,600
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(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
929,600
-----------------------------------------------------------------------------
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ]
-----------------------------------------------------------------------------
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
5.6%
-----------------------------------------------------------------------------
(12) TYPE OF REPORTING PERSON **
OO
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** SEE INSTRUCTIONS BEFORE FILLING OUT!
CUSIP No. 46333X108 13G Page 5 of 13 Pages
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(1) NAMES OF REPORTING PERSONS
Robert Atchinson
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(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
(a) [ ]
(b) [X]
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(3) SEC USE ONLY
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(4) CITIZENSHIP OR PLACE OF ORGANIZATION
United States
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NUMBER OF (5) SOLE VOTING POWER
-0-
SHARES --------------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
929,600
OWNED BY --------------------------------------------------------------
EACH (7) SOLE DISPOSITIVE POWER
-0-
REPORTING --------------------------------------------------------------
PERSON WITH (8) SHARED DISPOSITIVE POWER
929,600
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(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
929,600
-----------------------------------------------------------------------------
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ]
-----------------------------------------------------------------------------
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
5.6%
-----------------------------------------------------------------------------
(12) TYPE OF REPORTING PERSON **
IN
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** SEE INSTRUCTIONS BEFORE FILLING OUT!
CUSIP No. 46333X108 13G Page 6 of 13 Pages
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(1) NAMES OF REPORTING PERSONS
Phillip Gross
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(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
(a) [ ]
(b) [X]
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(3) SEC USE ONLY
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(4) CITIZENSHIP OR PLACE OF ORGANIZATION
United States
-----------------------------------------------------------------------------
NUMBER OF (5) SOLE VOTING POWER
-0-
SHARES --------------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
929,600
OWNED BY --------------------------------------------------------------
EACH (7) SOLE DISPOSITIVE POWER
-0-
REPORTING --------------------------------------------------------------
PERSON WITH (8) SHARED DISPOSITIVE POWER
929,600
-----------------------------------------------------------------------------
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
929,600
-----------------------------------------------------------------------------
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ]
-----------------------------------------------------------------------------
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
5.6%
-----------------------------------------------------------------------------
(12) TYPE OF REPORTING PERSON **
IN
-----------------------------------------------------------------------------
** SEE INSTRUCTIONS BEFORE FILLING OUT!
CUSIP No. 46333X108 13G Page 7 of 13 Pages
Item 1(a). Name of Issuer:
The name of the issuer is Ironwood Pharmaceuticals, Inc. (the
"Company").
Item 1(b). Address of Issuer's Principal Executive Offices:
The Company's principal executive offices are located at 320 Bent
Street, Cambridge, Massachusetts 02141.
Item 2(a). Name of Person Filing:
This statement is filed by:
(i) Adage Capital Partners, L.P., a Delaware limited partnership
("ACP"), with respect to the shares of Common Stock directly owned
by it;
(ii) Adage Capital Partners GP, L.L.C., a limited liability company
organized under the laws of the State of Delaware ("ACPGP"), as
general partner of ACP with respect to the shares of Common Stock
directly owned by ACP;
(iii) Adage Capital Advisors, L.L.C., a limited liability company
organized under the laws of the State of Delaware ("ACA"), as
managing member of ACPGP, general partner of ACP, with respect to
the shares of Common Stock directly owned by ACP;
(iv) Robert Atchinson ("Mr. Atchinson"), as managing member of ACA,
managing member of ACPGP, general partner of ACP, with respect to
the shares of Common Stock directly owned by ACP; and
(v) Phillip Gross ("Mr. Gross"), as managing member of ACA, managing
member of ACPGP, general partner of ACP, with respect to the
shares of Common Stock directly owned by ACP.
The foregoing persons are hereinafter sometimes collectively
referred to as the "Reporting Persons." Any disclosures herein with respect to
persons other than the Reporting Persons are made on information and belief
after making inquiry to the appropriate party.
Item 2(b). Address of Principal Business Office or, if None, Residence:
The address of the business office of each of the Reporting Persons is 200
Clarendon Street, 52nd floor, Boston, Massachusetts 02116.
Item 2(c). Citizenship:
ACP is a limited partnership organized under the laws of the State of
Delaware. ACPGP and ACA are limited liability companies organized under the laws
of the State of Delaware. Messrs. Gross and Atchinson are citizens of the United
States.
Item 2(d). Title of Class of Securities:
Common Stock (the "Common Stock").
Item 2(e). CUSIP Number:
46333X108
CUSIP No. 46333X108 13G Page 8 of 13 Pages
Item 3. If this statement is filed pursuant to Rules 13d-1(b) or 13d-2(b) or
(c), check whether the person filing is a:
(a) [ ] Broker or dealer registered under Section 15 of the Act,
(b) [ ] Bank as defined in Section 3(a)(6) of the Act,
(c) [ ] Insurance Company as defined in Section 3(a)(19) of the Act,
(d) [ ] Investment Company registered under Section 8 of the
Investment Company Act of 1940,
(e) [ ] Investment Adviser in accordance with Rule
13d-1(b)(1)(ii)(E),
(f) [ ] Employee Benefit Plan or Endowment Fund in accordance
with 13d-1 (b)(1)(ii)(F),
(g) [ ] Parent Holding Company or control person in accordance
with Rule 13d-1 (b)(1)(ii)(G),
(h) [ ] Savings Association as defined in Section 3(b) of the
Federal Deposit Insurance Act,
(i) [ ] Church Plan that is excluded from the definition of an
investment company under Section 3(c)(14) of the Investment
Company Act of 1940,
(j) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).
If this statement is filed pursuant to 13d-1(c), check this box: [x]
Item 4. Ownership.
A. Adage Capital Partners, L.P., Adage Capital Partners GP, L.L.C.
and Adage Capital Advisors, L.L.C.
(a) Amount beneficially owned: 929,600
(b) Percent of class: 5.6%. The percentages used herein and
in the rest of Item 4 are calculated based upon the
16,666,667 shares of Common Stock issued and outstanding
as of January 20, 2010 as reported in the Form S-1 filed
by the Company on January 20, 2010.
(c)(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote: 929,600
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition:
929,600
CUSIP No. 46333X108 13G Page 9 of 13 Pages
ACP has the power to dispose of and the power to vote the shares of
Common Stock beneficially owned by it, which power may be exercised by its
general partner, ACPGP. ACA, as managing member of ACPGP, directs ACPGP's
operations. Neither ACPGP nor ACA directly own any shares of Common Stock. By
reason of the provisions of Rule 13d-3 of the Securities Exchange Act of 1934
(the "Act"), ACPGP and ACA may be deemed to beneficially own the shares owned by
ACP.
B. Robert Atchinson and Phillip Gross
(a) Amount beneficially owned: 929,600
(b) Percent of class: 5.6%
(c)(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote: 929,600
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition:
929,600.
Messrs. Atchinson and Gross, as managing members of ACA, have
shared power to vote the Common Stock beneficially owned by ACP. Neither Mr.
Atchinson nor Mr. Gross directly own any shares of Common Stock. By reason of
the provisions of Rule 13d-3 of the Act, each may be deemed to beneficially own
the shares beneficially owned by ACP.
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.
ACPGP, the general partner of ACP, has the power to direct the affairs of
ACP, including decisions respecting the disposition of the proceeds from the
sale of Common Stock. Messrs. Atchinson and Gross are the Managing Members of
ACA, the managing member of ACPGP, and in that capacity direct ACPGP's
operations.
CUSIP No. 46333X108 13G Page 10 of 13 Pages
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 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.
CUSIP No. 46333X108 13G Page 11 of 13 Pages
SIGNATURES
After reasonable inquiry and to the best of our knowledge and belief, the
undersigned certify that the information set forth in this statement is true,
complete and correct.
DATED: February 12, 2010
ADAGE CAPITAL PARTNERS, L.P.
By: Adage Capital Partners GP, L.L.C.,
its general partner
By: Adage Capital Advisors, L.L.C.,
its managing member
/s/ Robert Atchinson
------------------------------
Name: Robert Atchinson
Title: Managing Member
ADAGE CAPITAL PARTNERS GP, L.L.C.
By: Adage Capital Advisors, L.L.C.,
its managing member
/s/ Robert Atchinson
------------------------------
Name: Robert Atchinson
Title: Managing Member
ADAGE CAPITAL ADVISORS, L.L.C.
/s/ Robert Atchinson
------------------------------
Name: Robert Atchinson
Title: Managing Member
ROBERT ATCHINSON
/s/ Robert Atchinson
------------------------------
ROBERT ATCHINSON, individually
PHILLIP GROSS
/s/ Phillip Gross
------------------------------
PHILLIP GROSS, individually
CUSIP No. 46333X108 13G Page 12 of 13 Pages
EXHIBIT 1
JOINT ACQUISITION STATEMENT
PURSUANT TO RULE 13d-1(k)
The undersigned acknowledge and agree that the foregoing statement on
Schedule 13G, is filed on behalf of each of the undersigned and that all
subsequent amendments to this statement on Schedule 13G, shall be filed on
behalf of each of the undersigned without the necessity of filing additional
joint acquisition statements. The undersigned acknowledge that each shall be
responsible for the timely filing of such amendments, and for the completeness
and accuracy of the information concerning him or it contained therein, but
shall not be responsible for the completeness and accuracy of the information
concerning the others, except to the extent that he or it knows or has reason to
believe that such information is inaccurate.
DATED: February 12, 2010
ADAGE CAPITAL PARTNERS, L.P.
By: Adage Capital Partners GP, L.L.C.,
its general partner
By: Adage Capital Advisors, L.L.C.,
its managing member
/s/ Robert Atchinson
------------------------------
Name: Robert Atchinson
Title: Managing Member
ADAGE CAPITAL PARTNERS GP, L.L.C.
By: Adage Capital Advisors, L.L.C.,
its managing member
/s/ Robert Atchinson
------------------------------
Name: Robert Atchinson
Title: Managing Member
ADAGE CAPITAL ADVISORS, L.L.C.
/s/ Robert Atchinson
------------------------------
Name: Robert Atchinson
Title: Managing Member
CUSIP No. 46333X108 13G Page 13 of 13 Pages
ROBERT ATCHINSON
/s/ Robert Atchinson
------------------------------
ROBERT ATCHINSON, individually
PHILLIP GROSS
/s/ Phillip Gross
------------------------------
PHILLIP GROSS, individually