X0202 4 2005-03-28 0 0001169264 SYNIVERSE HOLDINGS INC SVR 0001262806 GTCR CO INVEST LP C/O GTCR GOLDER RAUNER, L.L.C. 6100 SEARS TOWER CHICAGO IL 60606 0 0 1 0 0001105021 GTCR GOLDER RAUNER LLC 6100 SEARS TOWER CHICAGO IL 60606 0 0 1 0 Common Stock 2005-03-28 4 C 0 79742 16 A 351514 D Class A Cumulative Redeemable Preferred Stock 2005-03-28 4 C 0 903.01 1413.05 D Common Stock 79742 0 D Each share of Class A Cumulative Redeemable Preferred Stock converted 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 February 9, 2005 by (2) the per share initial public offering price of the Common Stock, which is $16.00. Pursuant to the Issuer's Second Amended and Restated Certificate of Incorporation, each share of Class A Cumulative Redeemable Preferred Stock that was not redeemed with the proceeds from the Issuer's initial public offering of Common Stock was converted into Common Stock on March 28, 2005. GTCR Co Invest, L.P. ("Co-Invest") is the direct beneficial owner of the shares reported in Table II. GTCR Golder Rauner, L.L.C. ("GTCR") is the general partner of Co-Invest. As such, GTCR may be deemed to be the beneficial owner of the shares reported in Table II. GTCR expressly disclaims beneficial ownership of the shares reported in Table 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. Immed. Not Applicable /s/ Jody S. Gale under a Power of Attorney filed on 2/9/05 2005-03-28