0000950103-09-001742 DEFA14A 1 20090723 20090723 20090723 GHL Acquisition Corp. 0001418819 3669 000000000 DE 1231 DEFA14A 34 001-33963 09959981 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 dp14188_8k.htm FORM 8-K