1 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): SEPTEMBER 26, 2001 CISCO SYSTEMS, INC. (Exact Name of Registrant as Specified in Charter) CALIFORNIA 0-18225 77-0059951 (State or Other Jurisdiction (Commission (IRS Employer of Incorporation) File Number) Identification No.) 170 WEST TASMAN DRIVE, SAN JOSE, CALIFORNIA 95134-1706 (Address of Principal Executive Offices) (Zip Code) Registrant's telephone number, including area code: (408) 526-4000 2 ITEM 5. OTHER EVENTS. On September 26, 2001, Cisco Systems, Inc. (the "Registrant") announced that it completed the acquisition of Allegro Systems, Inc., a Delaware corporation. A copy of the press release issued by the Registrant on September 26, 2001 concerning the foregoing transaction is filed herewith as Exhibit 99.1 and is incorporated herein by reference. ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS. (c) Exhibits. 99.1 Press Release of Registrant, dated September 26, 2001, announcing Registrant's completion of the acquisition of Allegro Systems, Inc. 3 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. CISCO SYSTEMS, INC. Dated: September 27, 2001 By: /s/ Daniel Scheinman ---------------------------------------- Daniel Scheinman Senior Vice President, Corporate Affairs 4 EXHIBIT INDEX Exhibit Number Description of Document ------- ----------------------- 99.1 Press Release of Registrant, dated September 26, 2001, announcing Registrant's completion of the acquisition of Allegro Systems, Inc.