0000950103-09-001325 DEFA14A 4 20090603 20090603 20090603 GHL Acquisition Corp. 0001418819 3669 000000000 DE 1231 DEFA14A 34 001-33963 09872042 C/O GREENHILL & CO. 300 PARK AVENUE NEW YORK NY 10022 212-389-1500 C/O GREENHILL & CO. 300 PARK AVENUE NEW YORK NY 10022 DEFA14A 1 dp13700_8k.htm FORM 8-K EX-99.1 2 dp13700_ex9901.htm EXHIBIT 99.1 GRAPHIC 3 iridium_logo.jpg GRAPHIC EX-99.2 4 dp13700_ex9902.htm EXHIBIT 99.2