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 January 15, 2004 ------------------------------------------------ Date of report (Date of earliest event reported) NetScout Systems, Inc. -------------------------------------------------- (Exact name of Registrant as specified in charter) Delaware 0000-26251 04-2837575 ---------------------------- ---------------- ------------------- (State or Other Jurisdiction (Commission File (I.R.S. Employer of Incorporation) Number) Identification No.) 310 Littleton Road Westford, Massachusetts 01886 ------------------------------------------------------------ (Address of Principal Executive Offices) (Zip Code) (978) 614-4000 -------------------------------------------------- Registrant's telephone number, including area code Not Applicable ------------------------------------------------------------- (Former Name or Former Address, if Changed Since Last Report) Item 12. Results of Operations and Financial Condition. The following information and the Exhibit attached hereto shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act") or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing. On January 15, 2004, NetScout issued a press release regarding its financial results for the quarter ended December 31, 2003, its expectations of future performance and its intention to hold a conference call regarding these topics. NetScout's press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference. 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 hereunto duly authorized. NETSCOUT SYSTEMS, INC. Date: January 15, 2004 By: /s/ David P. Sommers --------------------------------------- David P. Sommers Chief Financial Officer and Senior Vice President, General Operations EXHIBIT INDEX Exhibit No. Description ----------- ----------- 99.1 Press release dated January 15, 2004.