FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * PEARLSTEIN JACK   2. Issuer Name and Ticker or Trading Symbol SYNIVERSE HOLDINGS INC [SVR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O SYNIVERSE HOLDINGS, INC., 8125 HIGHWOODS PALM WAY 3. Date of Earliest Transaction (Month/Day/Year) 01/13/2011 (Street) TAMPA, FL 33647 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) 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 01/13/2011   D(1)   16,170 D (1) 0 D

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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 Underlying Securities (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 of Derivative Security: 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

Employee stock option (right to buy)

$ 16

01/13/2011

D(2)

20,000

(3)

02/09/2015

Common Stock

20,000

$ 0

0

D

Employee stock option (right to buy)

$ 12.13

01/13/2011

D(2)

19,000

(4)

05/09/2017

Common Stock

19,000

$ 0

0

D

Employee stock option (right to buy)

$ 21

01/13/2011

D(2)

7,200

(5)

05/08/2018

Common Stock

7,200

$ 0

0

D

Employee stock option (right to buy)

$ 14.65

01/13/2011

D(2)

8,060

(6)

05/27/2016

Common Stock

8,060

$ 0

0

D

Employee stock option (right to buy)

$ 19.92

01/13/2011

D(2)

6,170

(7)

05/06/2017

Common Stock

6,170

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
PEARLSTEIN JACK C/O SYNIVERSE HOLDINGS, INC. 8125 HIGHWOODS PALM WAY TAMPA, FL 33647	X

Signatures

/s/ Laura E. Binion, under a power of attorney		01/14/2011
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	The shares of common stock, including restricted stock, were cancelled pursuant to the Agreement and Plan of Merger with Buccaneer Holdings, Inc. and Buccaneer Merger Sub, Inc., dated as of October 28, 2010 (the "Merger Agreement"), in exchange for a cash payment in the amount of $31.00 per share.
(2)	The options, whether vested or unvested, were cancelled pursuant to the Merger Agreement in exchange for a cash payment in the amount of $31.00 per share less the exercise price of the option.
(3)	The option vested 20% on February 9, 2006, and an additional 5% vested on each subsequent quarter date thereafter.
(4)	The option vested in three equal annual installments on each of May 9, 2008, May 9, 2009 and May 9, 2010.
(5)	The option vests in three equal annual installments on each of May 8, 2009, May 8, 2010 and May 8, 2011.
(6)	The option vests in three equal annual installments on each of May 27, 2010, May 27, 2011 and May 27, 2012.
(7)	The option vests in three equal annual installments on each of May 6, 2011, May 6, 2012 and May 6, 2013.

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