X0202 4 2004-10-01 0 0001268671 TNS INC TNS 0001262806 GTCR CO INVEST LP C/O GTCR GOLDER RAUNER LLC SEARS TOWER #6100 CHICAGO IL 60606-6402 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 2004-10-01 4 S 0 31827 20 D 136907 D GTCR Co-Invest, L.P. ("Co-Invest") is the direct beneficial owner of the shares reported in Tables I and II. GTCR Golder Rauner, L.L.C. ("GTCR") is the general partner of Co-Invest. As such, GTCR may be deemed to be a beneficial owner of the shares reported in Tables I and II. GTCR expressly disclaims beneficial ownership of the shares reported in Tables I and II. The filing of this form shall not be deemed an admission that GTCR is, for Section 16 purposes or otherwise, the beneficial owner of such shares. /s/ Thomas N. Blanchard under Powers of Attorney dated 03/16/04 2004-10-04