Filed Pursuant to Rule 424(b)(3) Registration File No.: 333-99693 PROSPECTUS SUPPLEMENT (TO PROSPECTUS DATED OCTOBER 31, 2002) L-3 COMMUNICATIONS HOLDINGS, INC. 448,582 Shares of Common Stock This prospectus supplement relates to 448,582 shares of Common Stock that may be sold by certain selling stockholders. This prospectus supplement, which supplements our prospectus dated October 31, 2002, contains information about the selling stockholders. NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS PROSPECTUS SUPPLEMENT IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE. July 28, 2003
TABLE OF CONTENTS PAGE ---- Selling Stockholders ...................................................... S-1 You should rely only on the information contained in this prospectus supplement and the prospectus to which it refers. We have not authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. This prospectus supplement shall not constitute an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus supplement and the prospectus to which it refers is accurate only as of their respective dates. i
SELLING STOCKHOLDERS The selling stockholders listed below received shares as consideration in connection with our acquisition of ComCept, Inc. ("ComCept"). The selling stockholders may receive additional consideration in cash or common stock, which is contingent on the performance of ComCept for its fiscal year ending June 30, 2004. The maximum additional common stock which may be payable to the selling stockholders for that additional contingent consideration is 109,544 shares. The following table states the number of shares of our outstanding common stock that the selling stockholders own resulting from payments made in our common stock in connection with our acquisition of ComCept, the number of such shares that may be sold for the account of the selling stockholders (or any of their donees with respect to donations to any such donee that does not exceed 500 shares), and the number of shares that will be owned by the selling stockholders assuming the sale of all the shares offered hereby. NUMBER OF NUMBER OF NUMBER OF SHARES OF SHARES OF SHARES OF COMMON STOCK COMMON STOCK COMMON STOCK SELLING STOCKHOLDER OWNED TO BE SOLD OWNED AFTER SALE - ------------------- ------------ ---------- ---------------- Robert L. Amick 10,439 10,439 0 Dennis R. Baas 10,439 10,439 0 George Bach 83 83 0 B&B Cullen Family LTD 59,402 59,402 0 Elizabeth Beasley 83 83 0 Claude Bennett 166 166 0 Tracy Benninger 437 437 0 Mark Bigham 6,041 6,041 0 Pressly Bonner 104 104 0 David Bryson 2,916 2,916 0 Thi Cao 20 20 0 Adelbert W. Carpenter 7,863 7,863 0 Christopher Christon 5,569 5,569 0 Neal B. Cooper 14,979 14,979 0 Max Corneau 166 166 0 Brian D. Cullen 50,102 50,102 0 Cullen Family Foundation 30,000 30,000 0 Gary Davis 2,441 2,441 0 Charles DeGilio 83 83 0 Paul Deuell 20 20 0 Robert E. Dryden 27,025 27,025 0 Robert S. Dunn 436 436 0 George M. Eargle 14,277 14,277 0 Chris Freeze 125 125 0 James C. Glenn, Jr. 1,616 1,616 0 Evan Goen 83 83 0 Joseph Goodman 1,458 1,458 0 Rose Goodrich 62 62 0 Michael C. Greer 22,254 22,254 0 Rebecca Henseley 104 104 0 Michell Hilton 41 41 0 James Higdon 41 41 0 Janey Hood 499 499 0 Ben K. Howell 3,123 3,123 0 Jamie Hydrick 104 104 0 Emily Juricek 83 83 0 John Langan 41 41 0 Edward Lavallee 104 104 0 Jim Mask 1,416 1,416 0 Greg Miller 604 604 0 Susan Mitchell 41 41 0 Bob Mimlitch 208 208 0 Art Money 833 833 0 Dick Murphy 83 83 0 John Parker 312 312 0 Kevin Powell 41 41 0 Art Sikes 354 354 0 Don Smith 208 208 0 Robert R. Spaulding 911 911 0 Lex E. Thornton 2,249 2,249 0 Bruce Trego 2,083 2,083 0 David L. Tschoerner 8,032 8,032 0 Jim Turner 1,249 1,249 0 Darrell Villarma 491 491 0 Maria Valdez 41 41 0 Greg Voelcker 41 41 0 Mark R. Von Schwartz 18,252 18,252 0 Frederick L. Wahl 7,605 7,605 0 Dee Ann Watkins 2,451 2,451 0 Anne Wester 1,041 1,041 0 John C. Wester and Anne L. Wester JT TEN WROS. 5,025 5,025 0 Chris White 1,104 1,104 0 Mark Wilhelm 1,166 1,166 0 Curtis Wold 83 83 0 Philip A. Yates 3,925 3,925 0 Kathy Young 20 20 0 Phil Young 833 833 0 Newbury Piret Companies, Inc. 5,477 5,477 0 ------- ------- --- 339,008 339,008 0 ======= ======= === S-1