SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* GTCR MEZZANINE PARTNERS LP (Last) (First) (Middle) C/O GTCR GOLDER RAUNER, L.L.C. SEARS TOWER #6100 (Street) CHICAGO IL 60606-6402 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol SYNIVERSE HOLDINGS INC [ SVR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner Officer (give title below) X Other (specify below) See remarks below
	3. Date of Earliest Transaction (Month/Day/Year) 08/12/2008
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.001 per share	08/12/2008		S		5(1)	D	$18.05	2,187	D
Common Stock, par value $0.001 per share	08/12/2008		S		5(1)	D	$17.8	2,182	D
Common Stock, par value $0.001 per share	08/12/2008		S		3(1)	D	$17.7	2,179	D
Common Stock, par value $0.001 per share	08/12/2008		S		1(1)	D	$17.67	2,178	D
Common Stock, par value $0.001 per share	08/12/2008		S		9(1)	D	$17.65	2,169	D
Common Stock, par value $0.001 per share	08/12/2008		S		16(1)	D	$17.6	2,153	D
Common Stock, par value $0.001 per share	08/12/2008		S		26(1)	D	$17.55	2,127	D
Common Stock, par value $0.001 per share	08/12/2008		S		1(1)	D	$17.54	2,126	D
Common Stock, par value $0.001 per share	08/12/2008		S		2(1)	D	$17.53	2,124	D
Common Stock, par value $0.001 per share	08/12/2008		S		2(1)	D	$17.52	2,122	D
Common Stock, par value $0.001 per share	08/12/2008		S		2(1)	D	$17.51	2,120	D
Common Stock, par value $0.001 per share	08/12/2008		S		47(1)	D	$17.5	2,073	D
Common Stock, par value $0.001 per share	08/13/2008		S		5(1)	D	$17.8	2,068	D
Common Stock, par value $0.001 per share	08/13/2008		S		1(1)	D	$17.75	2,067	D
Common Stock, par value $0.001 per share	08/13/2008		S		2(1)	D	$17.65	2,065	D
Common Stock, par value $0.001 per share	08/13/2008		S		18(1)	D	$17.5	2,047	D
Common Stock, par value $0.001 per share	08/13/2008		S		52(1)	D	$17.45	1,995	D
Common Stock, par value $0.001 per share	08/13/2008		S		16(1)	D	$17.43	1,979	D
Common Stock, par value $0.001 per share	08/13/2008		S		3(1)	D	$17.39	1,976	D
Common Stock, par value $0.001 per share	08/13/2008		S		13(1)	D	$17.38	1,963	D
Common Stock, par value $0.001 per share	08/13/2008		S		1(1)	D	$17.36	1,962	D
Common Stock, par value $0.001 per share	08/13/2008		S		2(1)	D	$17.35	1,960	D
Common Stock, par value $0.001 per share								66,250	I	See footnote(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* GTCR MEZZANINE PARTNERS LP (Last) (First) (Middle) C/O GTCR GOLDER RAUNER, L.L.C. SEARS TOWER #6100 (Street) CHICAGO IL 60606-6402 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director 10% Owner Officer (give title below) X Other (specify below) See remarks below

1. Name and Address of Reporting Person* GTCR PARTNERS VI L P (Last) (First) (Middle) C/O GTCR GOLDER RAUNER, L.L.C. SEARS TOWER #6100 (Street) CHICAGO IL 60606-6402 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director 10% Owner Officer (give title below) X Other (specify below) See remarks below

1. Name and Address of Reporting Person* GTCR GOLDER RAUNER LLC (Last) (First) (Middle) C/O GTCR GOLDER RAUNER, LLC SEARS TOWER #6100 (Street) CHICAGO IL 60606-6402 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director 10% Owner Officer (give title below) X Other (specify below) See remarks below

Explanation of Responses:

1. Reflects shares received by GTCR Mezzanine Partners, L.P. ("Mezzanine Partners") as a result of pro rata distributions from GTCR Capital Partners, L.P. ("Capital Partners") that were exempt from Section 16 of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16a-13 promulgated thereunder.

2. Reflects 66,250 shares held directly by Capital Partners. Mezzanine Partners is the general partner of Capital Partners. GTCR Partners VI, L.P. ("GTCR Partners VI") is the general partner of Mezzanine Partners and 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 be beneficial owners of the 66,250 shares reported in Table I. Mezzanine Partners, GTCR Partners VI and GTCR expressly disclaim beneficial ownership of such shares reported in Table I, except to the extent of their pecuniary interest therein. The filing of this form shall not be deemed an admission that Mezzanine Partners, GTCR Partners VI or GTCR is, for Section 16 purposes or otherwise, the beneficial owner of such shares, except to the extent of their pecuniary interest therein.

Remarks:

The Reporting Person may be deemed a director by virtue of its members serving on the board of directors of Syniverse Holdings, Inc.

	/s/ Jody S. Gale under a Power of Attorney	08/14/2008
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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