U.S. SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

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                                    FORM 8-K

                                 CURRENT REPORT
     PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

         Date of Report (Date of earliest event reported) March 28, 2007
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                                GREATBATCH, INC.
                                ----------------
             (Exact name of registrant as specified in its charter)



           Delaware                      1-16137                16-1531026
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(State or other jurisdiction of   (Commission File Number)     (IRS Employer
        incorporation)                                      Identification No.)



   9645 Wehrle Drive, Clarence, New York                                14031
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  (Address of principal executive offices)                           (Zip Code)


        Registrant's telephone number, including area code (716) 759-6901
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                                 Not Applicable
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            (Former name or former address, if changed since last report)

         Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

[] Written communications pursuant to Rule 425 under the Securities Act
    (17 CFR 230.425)

[] Soliciting material pursuant to Rule 14a-12 under the Exchange Act
    (17 CFR 240.14a-12)

[] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
   Act (17 CFR 240.14d-2(b))

[] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
   Act (17 CFR 240.13e-4(c))

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Item 1.01         Entry into a Material Definitive Agreement.
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                  (a) As previously reported, on March 22, 2007, Greatbatch,
                  Inc. (the "Company") entered into separate privately
                  negotiated agreements under which it will exchange $50 million
                  aggregate principal amount of its outstanding 2 1/4%
                  Convertible Subordinated Debentures due 2013 (the "Outstanding
                  Debentures") for an equivalent principal amount of a new
                  series of 2 1/4% Convertible Subordinated Debentures due 2013
                  (the "New Debentures"), and under which it will issue an
                  additional $80 million aggregate principal amount of New
                  Debentures. On March 28, 2007, Greatbatch completed the
                  exchange of Outstanding Debentures for New Debentures and the
                  sale of the additional New Debentures. After completion of the
                  exchange, approximately $120 million in aggregate principal
                  amount of Outstanding Debentures remain outstanding.

                  The Company issued the New Debentures pursuant to an
                  indenture, dated as of March 28, 2007, by and between the
                  Company and Manufacturers and Traders Trust Company, as
                  trustee, (the "2007 Indenture"). The New Debentures bear
                  interest at 2 1/4% per annum, with interest payable on June 15
                  and December 15 of each year, commencing June 15, 2007. The
                  New Debentures mature on June 15, 2013. The New Debentures are
                  unsecured indebtedness of the Company, and rank pari passu in
                  right of payment to the Outstanding Debentures and junior in
                  right of payment to the Company's senior indebtedness,
                  including its bank credit facility.

                  The New Debentures will be convertible upon the occurrence of
                  certain conditions into shares of the Company's common stock
                  at an initial conversion price of approximately $34.70 per
                  share, which is equivalent to an initial conversion ratio of
                  approximately 28.8219 shares per $1,000 principal amount of
                  New Debentures. The conversion price and the conversion ratio
                  will adjust automatically upon certain changes to the
                  Company's capitalization.

                  The New Debentures are convertible at the option of the
                  holders at such time as: (i) the closing price of the
                  Company's common stock exceeds 150% of the conversion price of
                  the New Debentures, initially $34.70, for 20 out of 30
                  consecutive trading days; (ii) the trading price per $1,000
                  principal amount of New Debentures is less than 98% of the
                  product of (x) the closing sale price of common stock for each
                  day during any five consecutive trading day period and (y) the
                  conversion rate per $1,000 principal amount of New Debentures;
                  (iii) the New Debenture has been called for redemption, at any
                  time on or after the date the notice of redemption has been
                  given until the close of business on the business day
                  immediately preceding the redemption date; (iv) the Company
                  distributes to all holders of common stock rights or warrants
                  entitling them to purchase additional shares of common stock
                  at less than the average closing price of common stock for the
                  ten trading days immediately preceding the announcement of the
                  distribution; (v) the Company distributes to all holders of
                  common stock any form of dividend which has a per share value
                  exceeding 5% of the price of the common stock on the day prior
                  to such date of distribution; (vi) the Company affects a
                  consolidation, merger, share exchange or sale of assets
                  pursuant to which its common stock is converted to cash or
                  other property; (vii) the period beginning 60 days prior to
                  but excluding June 15, 2013; and (viii) certain fundamental
                  changes occur or are approved by the Company's Board of
                  Directors.

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                  Conversions in connection with corporate transactions that
                  constitute a fundamental change require the Company to pay a
                  premium make-whole amount whereby the conversion ratio on the
                  New Debentures may be increased by up to 8.2 shares per $1000
                  principal amount. The premium make-whole amount will be paid
                  in shares of common stock upon any such conversion, subject to
                  the net share settlement feature of the New Debentures
                  described below.

                  The New Debentures contain a net share settlement feature,
                  which requires the Company, unless it has made an election
                  under the 2007 Indenture, upon conversion of the New
                  Debentures, to pay holders in cash for each $1,000 principal
                  amount of New Debentures the lesser of $1,000 and the
                  conversion value of the New Debentures, unless the Company
                  otherwise elects. Any amounts in excess of $1,000 will be
                  settled in shares of the Company's common stock, or at the
                  Company's option, cash.

                  The New Debentures are redeemable by the Company at any time
                  on or after June 20, 2012, and prior to maturity, or at the
                  option of a holder upon the occurrence of certain fundamental
                  changes affecting the Company. The New Debentures do not
                  contain the put option provisions of the Outstanding
                  Debentures which provide the holders a one-time option to
                  require the Company to repurchase the Outstanding Debentures
                  on June 15, 2010.

                  An event of default under the 2007 Indenture will occur if the
                  Company: (i) is delinquent in making certain payments due
                  under the New Debentures; (ii) fails to deliver certain
                  required notices; (iii) fails to deliver all cash and any
                  shares of common stock upon conversion of the New Debentures;
                  (iv) fails, following notices, to cure a breach of a covenant
                  under the New Debentures or the 2007 Indenture; or (v)
                  commences or has commenced against it any proceeding seeking
                  liquidation, reorganization or other relief under any
                  bankruptcy, insolvency or similar law.

                  In connection with the issuance of the New Debentures, the
                  Company entered into a registration rights agreement, dated as
                  of March 28, 2007 (the "2007 Registration Rights Agreement"),
                  with the holders of the New Debentures, under which the
                  Company has agreed to file a shelf registration statement with
                  respect to the resale of the New Debentures and the Company
                  common stock issuable upon conversion thereof. The Company is
                  obligated to file this registration statement within 30 days
                  of the closing of the issuance of the New Debenture and to
                  cause such registration statement to become effective within
                  90 days of the closing of the transaction. In the event that
                  the Company fails to comply with its obligations under the
                  2007 Registration Rights Agreement, the Company is obligated
                  to make additional payments to the holders of the New
                  Debentures.

                  The form of exchange and purchase agreement, the 2007
                  Indenture and the 2007 Registration Rights Agreement are
                  included herewith and incorporated herein by reference. The
                  foregoing descriptions of such agreements are for summary
                  purposes only and are qualified in their entirety by the full
                  text of such agreements.

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                   (b) On March 27, 2007, Greatbatch, Inc. (the "Company")
                  entered into separate privately negotiated agreements under
                  which it will exchange approximately an additional $67.8
                  million aggregate principal amount of its Outstanding
                  Debentures for an equivalent principal amount of New
                  Debentures (the "Additional New Debentures"). The transactions
                  are expected to close, subject to customary closing
                  conditions, on April 2, 2007.

                  The Additional New Debentures will be issued subject to the
                  terms of the 2007 Indenture pursuant to a supplemental
                  indenture thereto, and will the contain the same terms as the
                  New Debentures described in Item 1.01(a) above. The holders of
                  the Additional New Debentures will be entitled to the benefits
                  of the 2007 Registration Rights Agreement described in Item
                  1.01(a) above.

                  The New Debentures, the Additional New Debentures and the
                  common stock issuable upon conversion of the New Debentures
                  and the Additional New Debentures will not be registered under
                  the Securities Act of 1933, as amended, or the securities laws
                  of any state and, unless so registered, may not be offered or
                  sold in the United States except pursuant to an applicable
                  exemption from the registration requirement of the Securities
                  Act and applicable state securities laws.


Item 2.03         Creation of a Direct Financial Obligation or an Obligation
                  Under an Off-Balance Sheet Arrangement of a Registrant.
                  --------------------------------------------------------------

                  (a) See Item 1.01(a) above, which is incorporated by reference
                      herein.

                  (b) See Item 1.01(b) above, which is incorporated by reference
                      herein.

Item 3.02         Unregistered Sales of Equity Securities.
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                  (a) See Item 1.01(a) above, which is incorporated by reference
                  herein. The issuance of the New Debentures is exempt from
                  registration under the Securities Act of 1933, as amended,
                  pursuant to Rule 506 promulgated thereunder.

                  (b) See Item 1.01(b) above, which is incorporated by reference
                  herein. The issuance of the Additional New Debentures is
                  exempt from registration under the Securities Act of 1933, as
                  amended, pursuant to Rule 506 promulgated thereunder.

Item 9.01         Financial Statements and Exhibits.

                  (c) Exhibits

                  10.1   Form of Exchange and Purchase Agreement, dated March
                         22, 2007, by and between Greatbatch, Inc. and certain
                         other parties thereto.

                  10.2   Form of Registration Rights Agreement, dated March 28,
                         2007, by and between Greatbatch, Inc. and certain other
                         parties thereto.

                  10.3   Indenture, dated March 28, 2007, by and between
                         Greatbatch, Inc. and Manufacturers and Traders Trust
                         Company, as trustee.

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                                   SIGNATURES

     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned, thereunto duly authorized.

                                  GREATBATCH, INC.
     Dated:  March 29, 2007
                                        By: /s/ Thomas J. Mazza
                                            -------------------
                                        Thomas J. Mazza
                                        Senior Vice President and
                                        Chief Financial Officer


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EXHIBIT
NUMBER                       DESCRIPTION
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10.1                         Form of Exchange and Purchase Agreement, dated
                             March 22, 2007, by and between Greatbatch,
                             Inc. and certain other parties thereto

10.2                         Form of Registration Rights Agreement, dated March
                             28, 2007, by and between Greatbatch, Inc.
                             and certain other parties thereto

10.3                         Indenture, dated March 28, 2007, by and between
                             Greatbatch, Inc. and Manufacturers and
                             Traders Trust Company, as trustee

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