Ownership Submission
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 *
MV Management X, L.L.C.
  2. Issuer Name and Ticker or Trading Symbol
Carbonite Inc [CARB]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) __X__ Other (specify below)
Affiliate of Director
(Last)
(First)
(Middle)
3000 SAND HILL ROAD, BUILDING 4, SUITE 100
3. Date of Earliest Transaction (Month/Day/Year)
08/16/2011
(Street)

MENLO PARK, CA 94025
4. If Amendment, Date 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
(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 08/16/2011   C   5,728,050 A (1) 5,744,570 I (2) (3) Menlo Ventures X, L.P. (2) (3)
Common Stock 08/16/2011   C   100,245 A (1) 100,535 I (4) MMEF X, L.P. (4)
Common Stock 08/16/2011   C   48,690 A (1) 48,830 I (5) Menlo Entrepreneurs Fund X, L.P. (5)
Common Stock 08/16/2011   P   779,728 A $ 10 6,524,298 I (2) (3) Menlo Ventures X, L.P. (2) (3)
Common Stock 08/16/2011   P   13,644 A $ 10 114,179 I (4) MMEF X, L.P. (4)
Common Stock 08/16/2011   P   6,628 A $ 10 55,458 I (5) Menlo Entrepreneurs Fund X, L.P. (5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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
Series A-1 Preferred Stock (1) 08/16/2011   C     105,957   (1)   (1) Common Stock 317,871 (1) 0 I (2) (3) Menlo Ventures X, L.P. (2) (3)
Series A-1 Preferred Stock (1) 08/16/2011   C     1,854   (1)   (1) Common Stock 5,562 (1) 0 I (4) MMEF X, L.P. (4)
Series A-1 Preferred Stock (1) 08/16/2011   C     901   (1)   (1) Common Stock 2,703 (1) 0 I (5) Menlo Entrepreneurs Fund X, L.P. (5)
Series A-2 Preferred Stock (1) 08/16/2011   C     282,061   (1)   (1) Common Stock 846,183 (1) 0 I (2) (3) Menlo Ventures X, L.P. (2) (3)
Series A-2 Preferred Stock (1) 08/16/2011   C     4,937   (1)   (1) Common Stock 14,811 (1) 0 I (4) MMEF X, L.P. (4)
Series A-2 Preferred Stock (1) 08/16/2011   C     2,397   (1)   (1) Common Stock 7,191 (1) 0 I (5) Menlo Entrepreneurs Fund X, L.P. (5)
Series B Preferred Stock (1) 08/16/2011   C     958,842   (1)   (1) Common Stock 2,876,526 (1) 0 I (2) (3) Menlo Ventures X, L.P. (2) (3)
Series B Preferred Stock (1) 08/16/2011   C     16,781   (1)   (1) Common Stock 50,343 (1) 0 I (4) MMEF X, L.P. (4)
Series B Preferred Stock (1) 08/16/2011   C     8,150   (1)   (1) Common Stock 24,450 (1) 0 I (5) Menlo Entrepreneurs Fund X, L.P. (5)
Series B-2 Preferred Stock (1) 08/16/2011   C     79,062   (1)   (1) Common Stock 237,186 (1) 0 I (2) (3) Menlo Ventures X, L.P. (2) (3)
Series B-2 Preferred Stock (1) 08/16/2011   C     1,384   (1)   (1) Common Stock 4,152 (1) 0 I (4) MMEF X, L.P. (4)
Series B-2 Preferred Stock (1) 08/16/2011   C     672   (1)   (1) Common Stock 2,016 (1) 0 I (5) Menlo Entrepreneurs Fund X, L.P. (5)
Series C Preferred Stock (1) 08/16/2011   C     360,691   (1)   (1) Common Stock 1,082,073 (1) 0 I (2) (3) Menlo Ventures X, L.P. (2) (3)
Series C Preferred Stock (1) 08/16/2011   C     6,312   (1)   (1) Common Stock 18,936 (1) 0 I (4) MMEF X, L.P. (4)
Series C Preferred Stock (1) 08/16/2011   C     3,066   (1)   (1) Common Stock 9,198 (1) 0 I (5) Menlo Entrepreneurs Fund X, L.P. (5)
Series D Preferred Stock (1) 08/16/2011   C     122,737   (1)   (1) Common Stock 368,211 (1) 0 I (2) (3) Menlo Ventures X, L.P. (2) (3)
Series D Preferred Stock (1) 08/16/2011   C     2,147   (1)   (1) Common Stock 6,441 (1) 0 I (4) MMEF X, L.P. (4)
Series D Preferred Stock (1) 08/16/2011   C     1,044   (1)   (1) Common Stock 3,132 (1) 0 I (5) Menlo Entrepreneurs Fund X, L.P. (5)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MV Management X, L.L.C.
3000 SAND HILL ROAD
BUILDING 4, SUITE 100
MENLO PARK, CA 94025
    X   Affiliate of Director
MENLO ENTREPRENEURS FUND X LP
3000 SAND HILL ROAD
BUILDING 4, SUITE 100
MENLO PARK, CA 94025
    X    
Menlo Ventures X L P
3000 SAND HILL ROAD
BUILDING 4, SUITE 100
MENLO PARK, CA 94025
    X    
MMEF X LP
3000 SAND HILL ROAD
BUILDING 4, SUITE 100
MENLO PARK, CA 94025
    X    

Signatures

 /s/ Danielle Sheer, by power of attorney for MV Management X, L.L.C.   08/17/2011
**Signature of Reporting Person Date

 /s/ Danielle Sheer, by power of attorney for MV Management X, L.L.C., General Partner of Menlo Entrepreneurs Fund X, L.P.   08/15/2011
**Signature of Reporting Person Date

 /s/ Danielle Sheer, by power of attorney for MV Management X, L.L.C., General Partner of Menlo Ventures X, L.P.   08/15/2011
**Signature of Reporting Person Date

 /s/ Danielle Sheer, by power of attorney for MV Management X, L.L.C, General Partner of MMEF X, L.P.   08/15/2011
**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) Each share of the Issuer's Preferred Stock converted into Common Stock on a 1:3 basis upon the closing of the Issuer's initial public offering and had no expiration date.
(2) These shares are owned directly by Menlo Ventures X, L.P. ("Menlo X"), of which MV Management X, L.L.C. ("MVM-X") is the sole general partner and exercises voting and investment power over these shares. The managing members of MVM-X are H. DuBose Montgomery, John W. Jarve, Douglas C. Carlisle, Sonja H. Perkins, Mark A. Siegel, Pravin A. Vazirani, and Shawn T. Carolan. The reporting person and its managing members disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that the reporting person or its managing members are the beneficial owner of such securities for Section 16 or any other purpose. Pravin A. Vazirani is a director of the Issuer. (Continued in footnote 2).
(3) Menlo X, Menlo Entrepreneurs Fund X, L.P. ("Menlo Entrepreneurs"), and MMEF X, L.P. ("MMEF") may be deemed to be members of a Section 13(d) "group." Menlo Entrepreneurs and MMEF disclose the existence of such a group and disclaim beneficial ownership of any shares held by Menlo X.
(4) These shares are owned directly by MMEF, of which MVM-X is the sole general partner and exercises voting and investment power over these shares. The managing members of MVM-X are H. DuBose Montgomery, John W. Jarve, Douglas C. Carlisle, Sonja H. Perkins, Mark A. Siegel, Pravin A. Vazirani, and Shawn T. Carolan. The reporting person and its managing members disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that the reporting person or its managing members are the beneficial owner of such securities for Section 16 or any other purpose. Pravin A. Vazirani is a director of the Issuer. Menlo X, Menlo Entrepreneurs, and MMEF may be deemed to be members of a Section 13(d) "group." Menlo X and Menlo Entrepreneurs disclose the existence of such a group and disclaim beneficial ownership of any shares held by MMEF.
(5) These shares are owned directly by Menlo Entrepreneurs, of which MVM-X is the sole general partner and exercises voting and investment power over these shares. The managing members of MVM-X are H. DuBose Montgomery, John W. Jarve, Douglas C. Carlisle, Sonja H. Perkins, Mark A. Siegel, Pravin A. Vazirani, and Shawn T. Carolan. The reporting person and its managing members disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that the reporting person or its managing members are the beneficial owner of such securities for Section 16 or any other purpose. Pravin A. Vazirani is a director of the Issuer. Menlo X, Menlo Entrepreneurs, and MMEF may be deemed to be members of a Section 13(d) "group." Menlo X and MMEF disclose the existence of such a group and disclaim beneficial ownership of any shares held by Menlo Entrepreneurs.

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