13D Filing: J2 Global Inc (JCOM) Holds Stake in Carbonite Inc (CARB)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE
13D/A

Under the Securities Exchange Act of 1934

(Amendment No. 6)*

CARBONITE,
INC.

(Name of Issuer)

Common Stock,
par value $0.01 per share

(Title of Class of Securities)

141337105

(CUSIP
Number)

Jeremy D. Rossen

Vice President, General Counsel

j2 Global, Inc.

6922
Hollywood Blvd., Suite 500

Los Angeles, California 90028

(323) 860-9200

(Name,
Address and Telephone Number of Person Authorized to Receive Notices and Communications)

February 10, 2016

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box  ¨.

Note: Schedules filed in paper format shall
include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

*	The remainder of this cover page shall be filled out for a reporting persons initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be
deemed to be filed for the purpose of section 18 of the Securities Exchange Act of 1934 (Act) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act
(however, see the Notes).

Continued on following page(s)

Page 1 of 4 Pages

---

		Page 2 of 4

1		Names of Reporting Persons     j2 Global, Inc.
2		Check the Appropriate Box If a Member of a Group (See Instructions) a.  ¨        b.  ¨
3		SEC Use Only
4		Source of Funds (See Instructions)     WC
5		Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)     ¨
6		Citizenship or Place of Organization     Delaware
Number of Shares Beneficially Owned By Each Reporting Person With				7		Sole Voting Power     2,254,666
				8		Shared Voting Power     0
				9		Sole Dispositive Power     2,254,666
				10		Shared Dispositive Power     0
11		Aggregate Amount Beneficially Owned by Each Reporting Person      2,254,666
12		Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)     ¨
13		Percent of Class Represented By Amount in Row (11)     8.27%
14		Type of Reporting Person (See Instructions)     CO

---

		Page 3 of 4

Item 1.

Security and Issuer.

This Amendment No. 6 (the Amendment) amends and
supplements the Schedule 13D filed by j2 Global, Inc., a Delaware corporation (the Reporting Person), with the Securities and Exchange Commission on November 5, 2012, as amended (the Statement), related to the Common
Stock, par value $0.01 per share (the Shares), of Carbonite, Inc., a Delaware corporation (the Issuer). The address of the Issuers principal executive offices is Two Avenue de Lafayette, Boston, Massachusetts 02111.

Unless specifically amended or modified hereby, the disclosures set forth in the Statement remain unchanged.

Item 5.

Interest in Securities of the Issuer.

Item 5 of the Statement is amended
and supplemented as follows:

(a) As of the date hereof, the Reporting Person beneficially owns 2,254,666 Shares indirectly through a
wholly owned subsidiary. According to the Issuers Form 10-Q filed with the Securities and Exchange Commission on November 9, 2015, the number of Shares outstanding as of October 30, 2015 was 27,253,229. As of the date hereof, the
Reporting Person is the beneficial owner of 8.27% of the Shares outstanding.

(c) The trading dates, number of Shares sold, price per
Share and the nature of all transactions effected by the Reporting Person during the past 60 days are set forth in Schedule B, which is incorporated herein by reference.

---

		Page 4 of 4

SIGNATURES

After reasonable inquiry and to the best of my knowledge and belief, the undersigned certifies that the information set forth in this
statement is true, complete and correct.

Date: February 11, 2016				j2 GLOBAL, INC.
				By:		/s/ Jeremy D. Rossen
				Name:		Jeremy D. Rossen
				Title:		Vice President, General Counsel

---

SCHEDULE B

Transactions During the Past 60 Days

The
prices reported below reflect the weighted average sale price of the shares of Common Stock, par value $0.01 per share of Carbonite, Inc., sold on the relevant date. The Reporting Person hereby undertakes to provide upon request by the staff of the
Securities and Exchange Commission full information regarding the number of shares of Common Stock sold at each separate price.

Seller

Date of Transaction

Number of Shares

Weighted Average Price per Share

Nature of Transaction

j2 Global, Inc.

December 24, 2015

1,831

10.0467

(1)

Open Market Sale

j2 Global, Inc.

January 5, 2016

6,992

10.0042

(2)

Open Market Sale

j2 Global, Inc.

February 10, 2016

50,000

7.1127

(3)

Open Market Sale

1.	Executed at prices ranging from $10.03 to $10.06.

2.	Executed at prices ranging from $10.00 to $10.01.

3.	Executed at prices ranging from $6.76 to $7.28.