UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 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): May 14, 2004 ------------ WILSON GREATBATCH TECHNOLOGIES, INC. ------------------------------------ (Exact name of registrant as specified in its charter) Delaware 1-16137 16-1531026 -------------------------------------------------------------------------------- (State or other jurisdiction of (Commission File Number) (IRS Employer incorporation) Identification No.) 9645 Wehrle Drive, Clarence, New York 14031 -------------------------------------------------------------------------------- (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (716) 759-5600 -------------- Not Applicable ------------------------------------------------------------- (Former name or former address, if changed since last report) Item 5. Other Events. On May 14, 2003, Wilson Greatbatch Technologies, Inc. issued a press release announcing the Company's revision of previously forecasted sales guidance for 2004. A copy of the release is attached to this report as Exhibit 99.1. 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. Date: May 18, 2004 By: /S/ LAWRENCE P. REINHOLD ------------------------ Lawrence P. Reinhold Executive Vice President and Chief Financial Officer