0000950103-09-000955 DEFA14A 6 20090428 20090428 20090428 GHL Acquisition Corp. 0001418819 3669 000000000 DE 1231 DEFA14A 34 001-33963 09776333 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 dp13285_8k.htm FORM 8-K EX-1.1 2 dp13285_ex0101.htm EXHIBIT 1.1 EX-1.2 3 dp13285_ex0102.htm EXHIBIT 1.2 EX-99.1 4 dp13285_ex9901.htm EXHIBIT 99.1 GRAPHIC 5 ghl_logo.jpg GRAPHIC GRAPHIC 6 iridium_logo.jpg GRAPHIC