Filed by: Northrop Grumman Corporation and NNG, Inc. Pursuant to Rule 425 Under the Securities Act of 1933 Subject Company: Litton Industries, Inc. Commission File No: 333-54800 Contact: Jim Taft (310) 201-3335 For Immediate Release NORTHROP GRUMMAN EXTENDS ------------------------ TENDER OFFER FOR LITTON INDUSTRIES INC. --------------------------------------- LOS ANGELES -- March 9, 2001 -- Northrop Grumman Corporation's (NYSE: NOC) pending tender offer for the common and preferred stock of Litton Industries Inc. (NYSE: LIT) has been extended from March 8, 2001, to March 15, 2001, at midnight E.S.T. The existing tender offer for all outstanding Litton stock, as previously announced, will be extended in increments of five business days or less until the Hart-Scott-Rodino and European Union waiting periods have expired as provided in Northrop Grumman's agreement with Litton. Northrop Grumman said it expects to further extend the tender offer next Friday, March 16, 2001, for an additional five business days. At the close of business on March 8, 2001, approximately 40,190,000 shares of Litton Industries common and Series B preferred stock had been validly tendered and not withdrawn. Northrop Grumman Corporation, headquartered in Los Angeles, is a world- class, high technology company providing innovative solutions in systems integration, defense electronics and information technology for its U.S. and international military, government and commercial customers, as a prime contractor, principal subcontractor, team member or preferred supplier. The company had revenues of $7.6 billion in 2000 and has a workforce of approximately 39,000 employees. NNG, Inc., a wholly-owned subsidiary of Northrop Grumman Corporation, has filed a Registration Statement on Form S-4 with the Securities and Exchange Commission (the "SEC") in connection with its offer to purchase or exchange all of the outstanding capital stock of Litton Industries, Inc. Litton stockholders should read such Registration Statement and any other relevant documents filed with the SEC carefully before making any decisions with respect to the offer to purchase or exchange because these documents contain important information. Copies of the Registration Statement and any related documents filed with the SEC can be obtained free of charge at the website maintained by the SEC at www.sec.gov. # # # 0301-44 Members of the news media may receive our releases via e-mail by registering at: http://www.northgrum.com/cgi-bin/regist form.cgi ------------------------------------------------ LEARN MORE ABOUT US: Northrop Grumman news releases, product information, photos and video clips are available on the Internet at: http://www.northgrum.com