SCHEDULE 14A

(RULE 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES

EXCHANGE ACT OF 1934

Filed by the Registrant þ

Filed by a Party other than the Registrant o

Check the appropriate box:

o  Preliminary Proxy Statement

o  Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

o  Definitive Proxy Statement

þ  Definitive Additional Materials

o  Soliciting Material under Rule 14a-12

TRW INC.

(Name of Registrant as Specified In Its Charter)

Not Applicable

(Name of Person(s) Filing Proxy Statement)

Payment of Filing Fee (Check the appropriate box):

þ No fee required.

o Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

          (1) Title of each class of securities to which transaction applies:

          (2) Aggregate number of securities to which transaction applies:

          (3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

          (4) Proposed maximum aggregate value of transaction:

          (5) Total fee paid:

o Fee paid previously with preliminary materials.

o Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

          (1) Amount Previously Paid:

          (2) Form, Schedule or Registration Statement No.:

          (3) Filing Party:

          (4) Date Filed:

The Definitive Additional Materials filed herewith relate both to TRW’s Special Meeting of Shareholders scheduled for May 3, 2002 and to TRW’s Annual Meeting of Shareholders held on April 24, 2002. TRW’s proxy statement for the Special Meeting of Shareholders was filed on April 2, 2002 on Schedule 14A and TRW’s proxy statement for the Annual Meeting of Shareholders was filed on March 4, 2002 on Schedule 14A.

TABLE OF CONTENTS

Note: Certain cautionary language relating to the benefits of the value enhancement plan is contained in TRW’s April 2, 2002 Supplement to its Annual Meeting Proxy Statement.

This document contains certain “forward-looking statements” that TRW believes are within the meaning of the Private Securities Litigation Reform Act of 1995. The safe harbors intended to be created thereby are not available to statements made in connection with a tender offer and TRW is not aware of any judicial determination as to the applicability of such safe harbors to forward-looking statements made in proxy solicitation materials when there is a simultaneous tender offer. However, shareholders should be aware that the preparation of any such forward-looking statements requires the use of estimates of future revenues, expenses, activity levels and economic and market conditions, many of which are outside the Company’s control. Further, the Company’s results could be affected by the ability to obtain new contract awards; the level of defense funding by the government and the termination of existing government contracts; pricing pressures from customers; moderation or decline in the automobile build rate; changes in consumer debt levels; work stoppages; unanticipated downturn in the financial condition of, or business relationships with customers or suppliers; the ability to reduce the level of outstanding debt from cash flow from operations and the proceeds from asset dispositions; a credit rating downgrade; increase in interest rates; customer recall and warranty claims; product liability and litigation issues; changes to the regulatory environment regarding automotive safety; the introduction of competing products or technology by competitors; the ability to attract and retain skilled employees with high-level technical competencies; the financial results of companies in which we have made technology investments; the availability of funding for research and development; economic, regulatory and political domestic and international conditions; fluctuations in currency exchange rates; and the impact of additional terrorist attacks, which could result in reduced automotive production, disruptions to the transportation system, or significant and prolonged disruption to air travel. In addition, there can be no assurance: (i) that an agreement relating to any investment in the Company, or relating to any sale or other distribution of all or a part of the Company’s operating businesses will be reached, or that if an agreement is reached, that the transactions contemplated by such agreement will be consummated; (ii) that the Company will spin off the Automotive business or that such spin-off will be complete by the end of the fourth quarter 2002; (iii) that the Company will be successful in reducing the amount of its indebtedness, or that the methods described for debt reduction will be utilized; (iv) as to the amount by which debt will be reduced; (v) that the Company’s strategy will deliver any particular level of value to TRW shareholders; (vi) that defense spending will rise and research, development, test and evaluation budgets will increase; (vii) that the commercial aerospace industry will stabilize; (viii) that North American 2002 light vehicle production will increase from 2001 levels; (ix) that 2002 earnings per share estimates will be met or exceeded; (x) with respect to the expected amounts of the Company’s operating cash flows in 2002, that such amounts will be utilized to reduce the amount of the Company’s indebtedness; (xi) with respect to the amounts that will be realized, if any, by the Company from divestitures; (xii) with respect to the amount of sales, earnings per share or cash flow that will be realized by the Company in 2002; and (xiii) that the Company’s costs will decrease in 2002. Other factors and assumptions not identified above are also involved in the preparation of forward-looking statements, and the failure of such other factors and assumptions to be realized may also cause actual results to differ materially from those discussed. The Company assumes no obligation to update such estimates to reflect actual results, changes in assumptions or changes in other factors affecting such estimates other than as required by law.