X0202 4 2005-05-26 0 0001278382 GLOBAL SIGNAL INC GSL 0001292336 GREENHILL CAPITAL PARTNERS, LLC 300 PARK AVENUE, 23RD FLOOR NEW YORK NY 10022 0 0 1 0 0001292339 GCP MANAGING PARTNER, L.P. 300 PARK AVENUE, 23RD FLOOR NEW YORK NY 10022 0 0 1 0 0001292345 GCP, L.P. 300 PARK AVENUE, 23RD FLOOR NEW YORK NY 10022 0 0 1 0 0001282977 GREENHILL & CO INC 300 PARK AVENUE 23RD FLOOR NEW YORK NY 10022 0 0 1 0 0001292335 GCP 2000, LLC 300 PARK AVENUE, 23RD FLOOR NEW YORK NY 10022 0 0 1 0 0001120194 GREENHILL CAPITAL PARTNERS LP 300 PARK AVE 23RD FL NEW YORK NY 10022 0 0 1 0 0001288439 BOK SCOTT L 300 PARK AVENUE 23RD FLOOR NEW YORK NY 10022 0 0 1 0 0001288437 GREENHILL ROBERT F 300 PARK AVENUE 23RD FLOOR NEW YORK NY 10022 0 0 1 0 0001241677 NIEHAUS ROBERT H 300 PARK AVENUE, 23RD FLOOR NEW YORK NY 10022 0 0 1 0 Common Stock, par value $0.01 per share 2005-05-26 4 P 0 1176470 25.50 A 9598664 I Through limited partnerships Common Stock, par value $0.01 per share 2005-05-26 4 P 0 784314 25.50 A 784314 I Through limited partnerships Common Stock, par value $0.01 per share 32200 D This Form 4 is being filed by more than one reporting person. Greenhill Capital Partners, LLC, whose sole member is Greenhill & Co., Inc., is the general partner of GCP Managing Partner, L.P. GCP Managing Partner, L.P. and GCP, L.P. are general partners of Greenhill Capital Partners, L.P., which has acquired 727,990 shares of the common stock of the Issuer (the "Common Stock") and also indirectly holds 5,173,164 shares of Common Stock through GCP SPV I, LLC (the "SPV"), Greenhill Capital Partners (Executives), L.P., which has acquired 112,072 shares of Common Stock and also indirectly holds 832,686 shares of Common Stock through the SPV, Greenhill Capital, L.P., which has acquired 232,388 shares of Common Stock and also indirectly holds 1,662,506 shares of Common Stock through the SPV, and Greenhill Capital Partners (Cayman), L.P., which has acquired 104,020 shares of Common Stock and also indirectly holds 753,838 shares of Common Stock through the SPV. GCP 2000, LLC, is the general partner of GCP, L.P. GCP 2000, LLC is in turn controlled by its Senior Members, Scott L. Bok, Robert F. Greenhill and Robert H. Niehaus, who is also the Vice Chairman of the Board of Directors of the Issuer. Separately reported, Robert H. Niehaus individually is the direct record owner of 104,500 shares of Common Stock and the indirect record owner of 144,500 shares of Common Stock held by the Robert and Kate Niehaus Foundation, of which he is the President. Each reporting person disclaims beneficial ownership of the reported securities except and to the extent of its or his pecuniary interest therein. Greenhill Capital Partners, LLC, whose sole member (as noted above) is Greenhill & Co., Inc., is also the general partner of GCP Managing Partner II, L.P. GCP Managing Partner II, L.P. is the general partner of Greenhill Capital Partners II, L.P., which has acquired 401,136 shares of Common Stock, Greenhill Capital Partners (Executives) II, L.P., which has acquired 29,124 shares of Common Stock, Greenhill Capital Partners (Employees) II L.P., which has acquired 197,288 shares of Common Stock and Greenhill Capital Partners (Cayman) II, L.P., which has acquired 156,766 shares of Common Stock. Each reporting person disclaims beneficial ownership of the reported securities except and to the extent of its pecuniary interest therein. Greenhill Capital Partners, LLC, whose sole member (as noted above) is Greenhill & Co., Inc., is the direct record owner of 32,200 shares of Common Stock. Greenhill Capital Partners, LLC, By: Robert H. Niehaus, Chairman, /s/ Robert H. Niehaus 2005-05-31 GCP 2000, LLC, By: Robert H. Niehaus, /s/ Robert H. Niehaus 2005-05-31 GCP, L.P., By: Robert H. Niehaus, /s/ Robert H. Niehaus 2005-05-31 Greenhill Capital Partners, L.P., By: Robert H. Niehaus, /s/ Robert H. Niehaus 2005-05-31 GCP Managing Partner, L.P., By: Robert H. Niehaus, /s/ Robert H. Niehaus 2005-05-31 Greenhill & Co., Inc., By: Scott L. Bok, U.S. President, /s/ Scott L. Bok 2005-05-31 Scott L. Bok, /s/ Scott L. Bok 2005-05-31 Robert F. Greenhill, /s/ Robert F. Greenhill 2005-05-31 Robert H. Niehaus, /s/ Robert H. Niehaus 2005-05-31