X0201 4 2004-03-19 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 2004-03-19 4 C 0 82090 18 A 168734 D Class A Redeemable Convertible Preferred Stock 2004-03-19 4 C 0 1136 D Common Stock 82090 0 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 beneficial owners of the shares reported in Tables I and II. GTCR expressly disclaim 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. Each share of Class A Redeemable Convertible Preferred Stock was convertible into the number of shares of Common Stock obtained by dividing (1) the sum of (a) $1,000 and (b) any accrued and unpaid dividends through March 15, 2004 by (2) the per share initial public offering price of the Common Stock, which was $18.00. The Class A Redeemable Convertible Preferred Stock was convertible upon the closing of the initial public offering of Common Stock, which occurred on March 19, 2004. Not applicable. /s/ Thomas N. Blanchard under a Power of Attorney filed 03/16/04 2004-03-23