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

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 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.