================================================================================ FORM 6-K SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13A-16 OR 15D-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September, 2006 Commission File Number: 000-12713 NEC CORPORATION --------------- (Translation of registrant's name into English) 7-1, Shiba 5-chome, Minato-ku, Tokyo, Japan ------------------------------------------- (Address of principal executive offices) Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F. Form 20-F |X| Form 40-F |_| Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934. Yes |_| No |X| ================================================================================ ================================================================================ CONTENTS This report on Form 6-K of the registrant consists of the following document which is hereby attached hereto and incorporated by reference herein: 99.1 NEC to Delay Filing Its 2006 Form 20-F and Form 20-F/A, dated September 28, 2006 SIGNATURE 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. NEC CORPORATION (Registrant) By /s/ Fujio Okada ------------------------------- Fujio Okada Associate Senior Vice President Date: September 28, 2006 ================================================================================ 2 EXHIBIT INDEX Exhibit Number Description of Exhibit 99.1 NEC to Delay Filing Its 2006 Form 20-F and Form 20-F/A, dated September 28, 2006 3