X0202 4 2005-09-21 1 0001268671 TNS INC TNS 0001085449 GTCR CAPITAL PARTNERS L P 0 0 1 0 0001262801 GTCR MEZZANINE PARTNERS LP C/O GTCR GOLDEN RAUNER LLC SEARS TOWER #6100 CHICAGO IL 60606-6402 0 0 1 0 0001262948 GTCR PARTNERS VI L P 0 0 1 0 0001105021 GTCR GOLDER RAUNER LLC 6100 SEARS TOWER CHICAGO IL 60606-6402 0 0 1 0 Common Stock, par value $0.001 per share 2005-09-21 4 S 0 193838 23.25 D 0 D GTCR Capital Partners, L.P. ("Capital Partners") was the direct beneficial owner of the shares reported in Table I. GTCR Mezzanine Partners, L.P. ("Mezzanine Partners") is the general partner of Capital Partners. GTCR Partners VI, L.P. ("GTCR Partners VI") is the general partner of Mezzanine Partners. GTCR Golder Rauner, L.L.C. ("GTCR") is the general partner of GTCR Partners VI. As such, Mezzanine Partners, GTCR Partners VI and GTCR may be deemed to have been beneficial owners of the shares reported in Table I. Mezzanine Partners, GTCR Partners VI and GTCR expressly disclaim beneficial ownership of the shares reported in Table I. The filing of this form shall not be deemed an admission that Mezzanine Partners, GTCR Partners VI or GTCR was, for Section 16 purposes or otherwise, the beneficial owner of such shares. /s/ Thomas N. Blanchard under Powers of Attorney dated 03/16/04 2005-09-21