FILING PURSUANT TO RULE 425 OF THE SECURITIES ACT OF 1933, AS AMENDED FILER: NORTHROP GRUMMAN CORPORATION SUBJECT COMPANY: TRW INC. (NO. 1-2384) NEWS Northrop Grumman Corporation Public Information 1840 Century Park East Los Angeles, California 90067-2199 Telephone 310-553-6262 Fax 310-556-4561 Contact: Frank Moore (Media) (310) 201-3335 Gaston Kent (Investors) (310) 201-3423 For Immediate Release NORTHROP GRUMMAN EXTENDS OFFER ------------------------------ FOR ALL OUTSTANDING SHARES OF TRW INC. -------------------------------------- LOS ANGELES -- May 31, 2002 -- Northrop Grumman Corporation (NYSE: NOC) today announced that it has extended the expiration of its pending exchange offer for all outstanding shares of common and preferred stock of TRW Inc. (NYSE: TRW) from May 31, 2002, to Friday, June 14, 2002, at midnight EDT. Approximately 2,987,935 shares of TRW common stock of which 16,447 shares are subject to guaranteed delivery; 1,575 shares of Cumulative Serial Preference Stock II, $4.40 Convertible Series 1 of which 26 shares are subject to guaranteed delivery; and 3,745 shares of Cumulative Serial Preference Stock II, $4.50 Convertible Series 3 had been tendered to Northrop Grumman as of 5:00 p.m. EDT on May 31, 2002. The tendered shares are subject to validation by TRW's transfer agent. Northrop Grumman Corporation is an $18 billion, global defense company with its worldwide headquarters in Los Angeles. Northrop Grumman provides technologically advanced, innovative products, services and solutions in defense and commercial electronics, systems integration, information technology and nuclear and non-nuclear shipbuilding and systems. With nearly 100,000 employees and operations in 44 states and 25 countries, Northrop Grumman serves U.S. and international military, government and commercial customers. - more - Page 2 NORTHROP GRUMMAN EXTENDS OFFER ------------------------------ FOR ALL OUTSTANDING SHARES OF TRW INC. -------------------------------------- Northrop Grumman filed a registration statement on Form S-4 (File No. 333-83672) and a tender offer statement on Schedule TO with the SEC on March 4, 2002 with respect to its offer to exchange all outstanding shares of TRW capital stock for Northrop Grumman stock. These documents contain important information. TRW shareholders should read these documents and any amendments or supplements thereto before making any decision regarding the offer to exchange. Copies of such documents may be obtained without charge at the SEC's website at www.sec.gov or from D.F. King & Co., Inc. the information agent for the offer to exchange, at 800-755-7250. # # # 0502-153 LEARN MORE ABOUT US: Northrop Grumman news releases, product information, photos and video clips are available on the Internet at: http://www.northropgrumman.com Members of the news media may receive our releases via e-mail by registering at: http://www.northropgrumman.com/cgi-bin/regist_form.cgi