Northrop Grumman Corporation 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. from May 17, 2002, to Friday, May 31, 2002, at midnight EDT.

Approximately 2,997,000 shares of TRW common stock; 1,395 shares of
Cumulative Serial Preference Stock II, $4.40 Convertible Series 1; and
3,479 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 16,
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

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 or from D.F. King & Co., Inc. the information
agent for the offer to exchange, at 800-755-7250.