X0201 3 2004-03-16 0 0001268671 TNS INC TNS 0001104997 GTCR FUND VII LP C/O GTCR GOLDER RAUNER LLC SEARS TOWER #6100 CHICAGO IL 60606-6402 0 0 1 0 0001262949 GTCR PARTNERS VII 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 6624604 I By TNS Holdings, L.L.C. Class A Redeemable Convertible Preferred Stock Common Stock 6276623 I By TNS Holdings, L.L.C. GTCR Fund VII, L.P. ("Fund VII") owns units of TNS Holdings, L.L.C., which is the direct beneficial owner of the shares reported in Tables I and II. GTCR Partners VII, L.P. ("GTCR Partners VII") is the general partner of Fund VII and GTCR Golder Rauner, L.L.C. ("GTCR") is the general partner of GTCR Partners VII. As such, GTCR Partners VII and GTCR may be deemed to be beneficial owners of the shares reported in Tables I and II. GTCR Partners VII and 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 Partners VII or GTCR is, for Section 16 purposes or otherwise, the beneficial owner of such shares. Each share of Class A Redeemable Convertible Preferred Stock is 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 is $18.00. The Class A Redeemable Convertible Preferred Stock is convertible upon the closing of the initial public offering of Common Stock. /s/ Thomas N. Blanchard under Powers of Attorney attached hereto 03/16/04 2004-03-16