Ownership History
| LOCKHEED MARTIN FEDERAL SYSTEM | $0 | 200709190106609/ | 09/19/2007 |
| LOCKHEED MARTIN FEDERAL SYSTEM | $0 | 2412/1762 | 01/31/1997 |
| LORAL FEDERAL SYSTEMS COMPANY | $10,424,900 | 2119/1797 | 03/07/1994 |
| INTERNATIONAL BUSINESS MACHINE CORPORATION | $0 | 443/390 | 10/25/1967 |