SECURITIES & EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------

                                  SCHEDULE 13D*

                                 GSI GROUP INC.
             ------------------------------------------------------
                                (Name of Issuer)

                                  COMMON STOCK
             ------------------------------------------------------
                         (Title of Class of Securities))

                                    36229U102
             ------------------------------------------------------
                                 (CUSIP Number)

                              Noah Greenhill, Esq.
                       Highbridge Capital Management, LLC
                         9 West 57th Street, 27th Floor
                            New York, New York 10019
             ------------------------------------------------------
                  (Name, address and telephone number of person
                authorized to receive notices and communications)

                                  June 22, 2009
             ------------------------------------------------------
            (Date of event which requires filing of this statement))

     If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is filing
this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the
following box [ ].

     NOTE: Schedules filed in paper format shall include a signed original and
five copies of the schedule, including all exhibits. See Rule 13d-7 for other
parties to whom copies are to be sent.

                         (Continued on following pages)

                              (Page 1 of 12 Pages)

-------------------------------------------------------------------------------
     (*)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. 36229U102                 13D                   Page 2 of 12


-------------------------------------------------------------------------------
     (1) NAME OF REPORTING PERSONS

                    Highbridge Capital Management, LLC

-------------------------------------------------------------------------------
     (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                     (a) [ ]
                                                                     (b) [X]

--------------------------------------------------------------------------------
     (3) SEC USE ONLY

-------------------------------------------------------------------------------
     (4) SOURCE OF FUNDS
                            OO

-------------------------------------------------------------------------------
     (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
         REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]

-------------------------------------------------------------------------------
     (6) CITIZENSHIP OR PLACE OF ORGANIZATION
                    Delaware

-------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         ----------------------------------------------------------------

BENEFICIALLY   (8)  SHARED VOTING POWER
                    1,325,136 shares of Common Stock
OWNED BY       ----------------------------------------------------------------

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      ----------------------------------------------------------------

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    1,325,136 shares of Common Stock

-------------------------------------------------------------------------------
     (11)    AGGREGATE AMOUNT BENEFICIALLY OWNED
             BY EACH REPORTING PERSON
             1,325,136 shares of Common Stock

-------------------------------------------------------------------------------
     (12)    CHECK BOX IF THE AGGREGATE AMOUNT
             IN ROW (11) EXCLUDES CERTAIN SHARES                           [ ]

-------------------------------------------------------------------------------
     (13)    PERCENT OF CLASS REPRESENTED
             BY AMOUNT IN ROW (11)
                     2.8% (See Item 4)

-------------------------------------------------------------------------------
     (14)    TYPE OF REPORTING PERSON
                    OO

-------------------------------------------------------------------------------




CUSIP No. 36229U102                 13D                   Page 3 of 12


     (1) NAME OF REPORTING PERSONS

         Highbridge International LLC

-------------------------------------------------------------------------------
     (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                     (a) [ ]
                                     (b) [X]

-------------------------------------------------------------------------------
     (3) SEC USE ONLY

-------------------------------------------------------------------------------
     (4) SOURCE OF FUNDS
                            WC

-------------------------------------------------------------------------------
     (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
         REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]

-------------------------------------------------------------------------------
     (6) CITIZENSHIP OR PLACE OF ORGANIZATION
         Cayman Islands, British West Indies

-------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         --------------------------------------------------------------

BENEFICIALLY   (8)  SHARED VOTING POWER
                    1,325,136 shares of Common Stock
OWNED BY       --------------------------------------------------------------

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      --------------------------------------------------------------

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    1,325,136 shares of Common Stock

-------------------------------------------------------------------------------
     (11)    AGGREGATE AMOUNT BENEFICIALLY OWNED
             BY EACH REPORTING PERSON
             1,325,136 shares of Common Stock

-------------------------------------------------------------------------------
     (12)    CHECK BOX IF THE AGGREGATE AMOUNT
             IN ROW (11) EXCLUDES CERTAIN SHARES                        [ ]

-------------------------------------------------------------------------------
     (13)    PERCENT OF CLASS REPRESENTED
             BY AMOUNT IN ROW (11)
                     2.8% (See Item 4)

-------------------------------------------------------------------------------
     (14)    TYPE OF REPORTING PERSON
                    OO

-------------------------------------------------------------------------------




CUSIP No. 36229U102                 13D                   Page 4 of 12

     (1) NAME OF REPORTING PERSONS

         Glenn Dubin

-------------------------------------------------------------------------------
     (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                          (a) [ ]
                                                          (b) [X]

-------------------------------------------------------------------------------
     (3) SEC USE ONLY

-------------------------------------------------------------------------------
     (4) SOURCE OF FUNDS
                            OO

-------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]

-------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
                    United States

-------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         --------------------------------------------------------------

BENEFICIALLY   (8)  SHARED VOTING POWER
                    1,325,136 shares of Common Stock
OWNED BY       --------------------------------------------------------------

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      --------------------------------------------------------------

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    1,325,136 shares of Common Stock

-------------------------------------------------------------------------------
     (11)    AGGREGATE AMOUNT BENEFICIALLY OWNED
             BY EACH REPORTING PERSON
             1,325,136 shares of Common Stock

-------------------------------------------------------------------------------
     (12)    CHECK BOX IF THE AGGREGATE AMOUNT
             IN ROW (11) EXCLUDES CERTAIN SHARES                        [ ]

-------------------------------------------------------------------------------
     (13)    PERCENT OF CLASS REPRESENTED
             BY AMOUNT IN ROW (11)
             2.8% (See Item 4)

-------------------------------------------------------------------------------
     (14)    TYPE OF REPORTING PERSON
                    IN

-------------------------------------------------------------------------------





CUSIP No. 36229U102                   13D                  Page 5 of 12


Item 1.     Security and Issuer.

This  statement  on Schedule  13D (this  "Statement")  relates to the  1,325,136
shares (the "Common  Shares") of common stock, no par value (the "Common Stock),
of GSI  Group  Inc.,  a company  continued  and  existing  under the laws of the
Province  of  New  Brunswick,   Canada  (the   "Company")   held  by  Highbridge
International LLC. The Company's  principal executive offices are located at 125
Middlesex Turnpike, Bedford, Massachusetts 01730.

Item 2.     Identity and Background.

     (a) This Statement is filed by:

               (i)  Highbridge  Capital  Management,  LLC,  a  Delaware  limited
liability company, which is the trading manager of Highbridge International LLC;

               (ii)  Highbridge  International  LLC,  a Cayman  Islands  limited
liability  company,  with  respect to the shares of Common  Stock  directly  and
beneficially owned by it; and

               (iii) Glenn Dubin,  who serves as the CEO of  Highbridge  Capital
Management LLC.

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.

     (b)  The  address  of  the  principal  business  and  principal  office  of
Highbridge Capital Management,  LLC is 9 West 57th Street, 27th Floor, New York,
NY 10019.  The address of the principal  business and principal  office of Glenn
Dubin is c/o  Highbridge  Capital  Management,  LLC is 9 West 57th Street,  27th
Floor, New York, NY 10019.  The address of the principal  business and principal
office of  Highbridge  International  LLC is The Cayman  Corporate  Center,  4th
Floor, 27 Hospital Road, Grand Cayman, Cayman Islands, British West Indies.

     (c)  The  principal  business  of  each  of the  Reporting  Persons  is the
management of investment funds and activities related thereto.

     (d) None of the  Reporting  Persons has,  during the last five years,  been
convicted in a criminal  proceeding  (excluding  traffic  violations  or similar
misdemeanors).

     (e) None of the Reporting  Persons has, during the last five years,  been a
party to a civil  proceeding of a judicial or  administrative  body of competent
jurisdiction  and,  as a result of such  proceeding,  was,  or is subject  to, a
judgment,  decree or final order enjoining future  violations of, or prohibiting
or mandating  activities subject to, Federal or State securities laws or finding
any violation with respect to such laws.

     (f) Highbridge  Capital  Management,  LLC is a Delaware  limited  liability
company.  Highbridge  International  LLC is a Cayman Islands  limited  liability
company. Glenn Dubin is a citizen of the United States.





CUSIP No. 36229U102                   13D                  Page 6 of 12


Item 3.     Source and Amount of Funds and Other Consideration.

     The shares of Common Stock reported herein were acquired through a cashless
exercise of the Warrants (as defined in Item 4 below).  The Warrants were issued
to Highbridge  International  LLC in  connection  with its purchase of the Owned
Notes (as defined in Item 4 below).  The Owned Notes and Warrants  were acquired
with working  capital at an aggregate cost  (including  commissions,  if any) of
approximately $47,500,000.


Item 4.     Purpose of the Transaction.

     Each of the Reporting Persons acquired  beneficial  ownership of the shares
of Common Stock to which this Statement  relates for investment  purposes in the
ordinary course of business pursuant to the investment  strategies of Highbridge
International LLC.

     On July 9, 2008, the Company,  GSI Group  Corporation  (the  "Subsidiary"),
Highbridge  International LLC and certain other parties thereto  (together,  the
"Lenders")  entered  into  a  Securities  Purchase  Agreement  (the  "Securities
Purchase  Agreement")  pursuant to which Highbridge  International LLC purchased
(i) 11% Senior Notes (the "Notes") of the Subsidiary in the principal  amount of
$47,500,000  (the "Owned  Notes") and (ii)  Warrants to Purchase  Common  Stock,
initially   exercisable  for  up  to  1,330,570  shares  of  Common  Stock  (the
"Warrants")  pursuant to the Warrant  Agreement,  dated August 20, 2008,  by and
among the Company  and the Lenders  (the  "Warrant  Agreement").  The Notes were
issued  pursuant  to that  certain  Indenture,  dated as of August 20, 2008 (the
"Indenture"),   between  the  Subsidiary,  the  Company  and  Eagle  Acquisition
Corporation, as guarantors, and The Bank of New York Mellon Trust Company, N.A.,
as trustee (in such capacity, the "Trustee").

     The Company and the Lenders  entered into a Registration  Rights  Agreement
concurrently with the closing of the transactions contemplated by the Securities
Purchase Agreement (the "Registration Rights Agreement"),  pursuant to which the
Company agreed to provide certain registration rights with respect to the shares
of Common Stock  issuable upon exercise of the Warrants under the Securities Act
of 1933, as amended (the "1933 Act") and the rules and  regulations  promulgated
thereunder, and applicable state securities laws.

     The  Warrants  were  automatically  exercised  on  a  cashless  basis  into
1,325,136 shares of Common Stock pursuant to the terms of the Warrant  Agreement
at the time the  registration  statement  filed by the  Company  pursuant to the
Registration  Rights  Agreement  was declared  effective by the  Securities  and
Exchange Commission (the "SEC").

     The Securities  Purchase Agreement,  the Registration Right Agreement,  the
Indenture  and the Warrant,  copies of which are  referenced,  respectively,  as
Exhibits 1, 2, 3 and 4 hereto (which  incorporates by reference  Exhibit 10.1 of
the  Current  Report  on Form 8-K filed by the  Company  on July 11,  2008,  and
Exhibits  10.3,  10.1 and 10.2 of the  Current  Report  on Form 8-K filed by the
Company on August 21, 2008) are each incorporated herein by reference.

     Pursuant  to  Section  6.01(4)  of the  Indenture,  on  December  4,  2008,
Highbridge  International  LLC  delivered a notice of default to the  Subsidiary
(the  "Default  Notice"),  which  set  forth a default  of the  Subsidiary  that
occurred  pursuant to Section  4.02(a) of the  Indenture,  due to the  Company's
failure to (i) timely file its  Quarterly  Report on Form 10-Q for the quarterly
period ended September 26, 2008 (the "September 2008 10-Q") with the SEC within





CUSIP No. 36229U102                   13D                  Page 7 of 12


the time periods  specified in the SEC's rules and  regulations,  (ii) furnish a
copy of the same to the Trustee  for  delivery to the Holders (as defined in the
Indenture)  of the Notes and (iii)  post the same on the  Company's  website  or
otherwise  make the same available to the  prospective  purchasers of the Notes.
The  Company  has not filed the  September  2008  10-Q to date.  Subject  to the
Forbearance  Agreement described below, as of February 2, 2009 (the date 60 days
after the delivery of the Default Notice to the  Subsidiary),  holders of 25% of
the  aggregate  principal  amount  of Notes  outstanding  have had the  right to
accelerate the indebtedness outstanding under the Indenture.

     On  February 6, 2009,  the  Subsidiary  and  Highbridge  International  LLC
entered into a  Forbearance  Agreement  pursuant to which,  among other  things,
Highbridge  International  LLC  agreed to  forebear  from  taking  any action or
exercising any remedies under the Indenture related to the Event of Default (the
"Forbearance  Agreement").  The Forbearance Agreement terminated on February 27,
2009.

     The Subsidiary and Highbridge  International  LLC have come to preliminary,
non-binding  terms to be used to  restructure  the debt  outstanding  under  the
Indenture (the  "Restructuring").  The proposed terms of the Restructuring  were
determined  as of June 22, 2009 to include the  reduction  of the amount of debt
outstanding under the Indenture to $95,000,000, the granting of a first priority
lien with respect to the remaining debt  outstanding  under the  Indenture,  the
issuance  to  the  holders  of  Notes  (collectively,  the  "Noteholders")  of a
substantial equity interest in the Company in exchange for the reduction in debt
(which  interest,  in the aggregate,  would represent up to 80% of the Company's
equity on a pro forma basis) the  transition to a board of directors  that would
be  reflective  of such equity  ownership,  the deletion of certain  restrictive
covenants in the Indenture and the  implementation of a new management stock and
option incentive plan. The complete  preliminary  terms of the Restructuring are
set forth in a  non-binding  term sheet (the "Term  Sheet"),  a copy of which is
referenced as Exhibit 5 hereto (which  incorporates by reference Exhibit 99.1 of
the Current  Report on Form 8-K filed by the Company on June 30,  2009) which is
incorporated herein by reference.

     Upon information and belief,  certain of the other  Noteholders have agreed
with the Subsidiary to the proposed terms of the  Restructuring set forth in the
Term Sheet.

     The Reporting  Persons,  through  Highbridge  International LLC, may act in
concert with the other Noteholders  solely in their capacity as creditors of the
Company in connection  with the  Restructuring.  By virtue of such actions,  the
Noteholders  may be deemed to form a group  within the  meaning of Rule 13d-5 of
the Act, however the Reporting  Persons  expressly  disaffirm the existence of a
group with regard to the Common  Stock.  The  Reporting  Persons do not have any
plans or proposals to exercise any remedy available to the Reporting  Persons by
virtue of the Reporting  Persons'  beneficial  ownership of equity securities of
the Company.

     Except as set forth in this Item 4, none of the Reporting  Persons have any
present plans or proposals  that relate to or would result in any of the actions
specified in clauses (a) through (j) of the  instructions  to Item 4 of Schedule
13D. Depending on various factors, the Company's financial position and business
strategy,  the price  levels of the shares of Common  Stock,  conditions  in the
securities markets and general economic and industry  conditions,  the Reporting
Persons may in the future take such actions with respect to their  investment in
the Company as they deem appropriate including, without limitation, voting their





CUSIP No. 36229U102                   13D                  Page 8 of 12


shares of Common  Stock to  support or oppose the  acquisition  of the  Company,
tendering  into an offer to purchase  the  Company's  Common  Stock,  purchasing
additional  shares  of  Common  Stock  or any of the  Company's  debt or  equity
securities,  selling or  otherwise  disposing  of some or all of their shares of
Common Stock or any of the Company's debt or equity securities, short selling or
otherwise  hedging  some or all of their  shares of  Common  Stock or any of the
Company's  debt or equity  securities,  in each case,  in the open  market or in
privately negotiated transactions or otherwise, exercising their rights, if any,
as a holder of Notes in  connection  with a bankruptcy,  restructuring  or other
case or proceeding of the Issuer,  or changing  their  intention with respect to
any and all matters referred to in this Item 4.

     In addition, the Reporting Persons intend to review their investment in the
Company on a continuing  basis and may seek to influence or change the Company's
operations  or business  development  plans,  business  strategy,  management or
directors, competitive position, capital structure or capital management policy,
including,  without limitation,  through potential  discussions with management,
directors,  other shareholders and the other Noteholders,  existing or potential
strategic partners or competitors of the Company, industry analysts,  investment
and  financing  professionals  and/or  other  third  parties.  Such  matters and
discussions  may  materially  affect,  and  result  in,  the  Reporting  Persons
modifying their  investment in the Company,  exchanging  information with any of
such persons pursuant to appropriate  confidentiality  or similar  agreements or
otherwise,  working  together  with  any  of  such  persons  pursuant  to  joint
agreements  or  otherwise,   proposing  changes  in  the  Company's  operations,
governance,  capitalization  or strategic  plans, or in proposing or engaging in
one or more other actions set forth under  subsections (a) through (j) of Item 4
of Schedule  13D.  Factors that may influence  the  Reporting  Persons'  actions
include, but are not limited to, their view regarding the Company's  operations,
business strategy, prospects, financial position and/or strategic direction, the
outcome of the discussions and actions  referenced  herein,  price levels of the
Common  Stock  and  other   securities,   availability   of  funds,   subsequent
developments  affecting the Company, other investment and business opportunities
available  to the  Reporting  Persons,  conditions  in the  securities  and debt
market,  general  economic and industry  conditions  and other  factors that the
Reporting Persons may deem relevant from time to time.


Item 5.     Interest in Securities of the Issuer.

      A. Highbridge Capital Management, LLC

               (a)  As of the date hereof,  Highbridge Capital  Management,  LLC
                    may be deemed the  beneficial  owner of 1,325,136  shares of
                    Common Stock.

                    Percentage:  Approximately  2.8% as of the date hereof.  The
                    percentages  used  herein  and in  the  rest  of  Item 5 are
                    calculated based upon 47,591,899 shares,  which reflects the
                    number of shares of Common Stock  outstanding  as of October
                    23,  2008,  as  reported  in the  Company's  Rule  424(b)(3)
                    Prospectus filed on October 23, 2008.

               (b)  1. Sole power to vote or direct  vote:  0
                    2. Shared power to vote or direct  vote: See item (a) above.
                    3. Sole power to dispose  or direct the  disposition:  0
                    4. Shared  power to dispose or direct the disposition:
                       See item (a) above.




CUSIP No. 36229U102                   13D                  Page 9 of 12


               (c)  Highbridge  Capital  Management,  LLC did not enter into any
                    transactions in the Common Stock within the last sixty days.

               (d)  No person other than the Reporting  Persons is known to have
                    the right to receive,  or the power to direct the receipt of
                    dividends from, or proceeds from the sale of, such shares of
                    the Common Stock.

               (e)  Not applicable.

      B. Highbridge International LLC

               (a)  As of the date hereof,  Highbridge  International LLC may be
                    deemed the  beneficial  owner of 1,325,136  shares of Common
                    Stock.

                    Percentage: Approximately 2.8% as of the date hereof.

               (b)  1. Sole power to vote or direct  vote:  0
                    2. Shared power to vote or direct  vote: See item (a) above.
                    3. Sole power to dispose  or direct the  disposition:  0
                    4. Shared  power to dispose or direct the disposition:
                       See item (a) above.

               (c)  Highbridge   International   LLC  did  not  enter  into  any
                    transactions in the Common Stock within the last sixty days.

               (d)  No person other than the Reporting  Persons is known to have
                    the right to receive,  or the power to direct the receipt of
                    dividends from, or proceeds from the sale of, such shares of
                    the Common Stock.

               (e)  Not applicable.

      C.  Glenn Dubin

               (a)  As of  the  date  hereof,  Glenn  Dubin  may be  deemed  the
                    beneficial owner of 1,325,136 shares of Common Stock.

                    Percentage: Approximately 2.8% as of the date hereof.

               (b)  1. Sole power to vote or direct  vote:  0
                    2. Shared power to vote or direct  vote: See item (a) above.
                    3. Sole power to dispose  or direct the  disposition:  0
                    4. Shared  power to dispose or direct the disposition:
                       See item (a) above.

               (c)  Glenn  Dubin  did not  enter  into any  transactions  in the
                    Common Stock within the last sixty days.

               (d)  No person other than the Reporting  Persons is known to have
                    the right to receive,  or the power to direct the receipt of
                    dividends from, or proceeds from the sale of, such shares of
                    the Common Stock.





CUSIP No. 36229U102                   13D                  Page 10 of 12


               (e)  Not applicable.

The  foregoing  should not be  construed in and of itself as an admission by any
Reporting  Person as to  beneficial  ownership of Common Shares owned by another
Reporting Person. In addition,  each of Highbridge Capital  Management,  LLC and
Glenn Dubin disclaims  beneficial ownership of Common Shares owned by Highbridge
International LLC.


Item 6.     Contracts, Arrangements, Understandings or
            Relationships with Respect to Securities of the Issuer.

     As described in Item 4 above,  in connection with the issuance of the Owned
Notes and the Warrants,  on July 9, 2008,  the Company,  the  Subsidiary and the
Lenders entered into the Securities Purchase Agreement and upon the consummation
of the transactions contemplated by the Securities Purchase Agreement, on August
20,  2009,  the Company  and the Lenders  entered  into the  Registration  Right
Agreement,  copies  of  which  are  referenced  as  Exhibits  1  and  2  hereto,
respectively (which incorporates by reference Exhibit 10.1 of the Current Report
on Form  8-K  filed by the  Company  on July 11,  2008 and  Exhibit  10.3 of the
Current  Report on Form 8-K filed by the  Company  on August  21,  2008) and the
Subsidiary  issued to Highbridge  International  LLC the Owned Notes pursuant to
the  Indenture  and the  Company  issued  to  Highbridge  International  LLC the
Warrants  pursuant to the Warrant  Agreement,  copies of which are referenced as
Exhibits 3 and 4 hereto,  respectively (which incorporates by reference Exhibits
10.1 and 10.2 of the  Current  Report on Form 8-K filed by the Company on August
21, 2008).

     As described in Item 4 above, on December 4, 2008, Highbridge International
LLC delivered the Default Notice to the Company.

     As described in Item 4 above, on February 6, 2009, Highbridge International
LLC entered into a Forbearance Agreement with the Subsidiary.

     As described in Item 4 above,  the Subsidiary and Highbridge  International
LLC have come to  preliminary,  non-binding  terms to effect the  Restructuring,
which,  on June 22, 2009,  were determined to include the terms set forth in the
Term  Sheet,  a  copy  of  which  is  referenced  as  Exhibit  5  hereto  (which
incorporates  by reference  Exhibit 99.1 of the Current Report on Form 8-K filed
by the Company on June 30, 2009.

     Other than as set forth above and the Joint Acquisition  Statement attached
as  Exhibit  6  hereto,  as  of  the  date  hereof,   there  are  no  contracts,
arrangements,  understandings  or  relationships  (legal or otherwise) among the
persons  named in Item 2 hereof and between such  persons and any person  (other
than the Company) with respect to any securities of the Company.


Item 7.     Materials to be Filed as Exhibits.

1. Securities Purchase  Agreement,  dated July 8, 2009, by and among the Issuer,
the Subsidiary,  Highrbidge  International LLC and certain other parties thereto
(incorporated  by reference  to Exhibit  10.1 to the Current  Report on Form 8-K
filed by GSI Group Inc. on July 11, 2008).





CUSIP No. 36229U102                   13D                  Page 11 of 12


2. Registration Rights Agreement,  dated August 20, 2008, by and among GSI Group
Inc. and the Lenders  (incorporated  by reference to Exhibit 10.3 to the Current
Report on Form 8-K filed by GSI Group Inc. on August 21, 2008).

3. Indenture (including the Forms of Notes), dated August 20, 2008, by and among
GSI  Group  Corporation,  as  Issuer,  GSI Group  Inc.,  as a  Guarantor,  Eagle
Acquisition  Corporation,  as a Guarantor, and The Bank of New York Mellon Trust
Company,  N.A.,  as Trustee  (incorporated  by  reference to Exhibit 10.1 to the
Current Report on Form 8-K filed by GSI Group Inc. on August 21, 2008).

4. Warrant Agreement, dated August 20, 2008, by and among GSI Group Inc. and the
Lenders (incorporated by reference to Exhibit 10.2 to the Current Report on Form
8-K filed by GSI Group Inc. on August 21, 2008).

5. Term Sheet(incorporated by reference to Exhibit 99.1 of the Current Report on
Form 8-K filed by the Issuer on June 30, 2009).

6. Joint Filing Agreement relating to the filing of joint acquisition statements
as required by Rule  13d-1(k)(1)  under the Securities  Exchange Act of 1934, as
amended.






CUSIP No. 36229U102                   13D                  Page 12 of 12


                                   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:  July 2, 2009

HIGHBRIDGE INTERNATIONAL LLC                 HIGHBRIDGE CAPITAL MANAGEMENT, LLC

By: Highbridge Capital Management, LLC
    its Trading Manager                      By: /s/ John Oliva
                                                 ------------------------------
                                             Name: John Oliva
                                             Title: Managing Director
By: /s/ John Oliva
------------------------------
Name: John Oliva
Title: Managing Director




/s/ Glenn Dubin
------------------------------
GLENN DUBIN





                                    EXHIBIT 1

                           JOINT ACQUISITION STATEMENT
                           PURSUANT TO RULE 13D-1(k)1

The undersigned  acknowledge and agree that the foregoing  statement on Schedule
13D is filed  on  behalf  of each of the  undersigned  and  that all  subsequent
amendments to this statement on Schedule 13D 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:  July 2, 2009

HIGHBRIDGE INTERNATIONAL LLC                HIGHBRIDGE CAPITAL MANAGEMENT, LLC

By: Highbridge Capital Management, LLC      By: /s/ John Oliva
    its Trading Manager                         -------------------------------
                                            Name:  John Oliva
                                            Title: Managing Director

By: /s/ John Oliva
-----------------------------------
Name:  John Oliva
Title: Managing Director




/s/ Glenn Dubin
-----------------------------------
GLENN DUBIN