The reporting person is a party to the following contracts and arrangements with the issuer with respect to (i) the acquisition of Common Stock from the issuer and (ii) registration rights relating to Common Stock which the reporting person has or may acquire: · The reporting person may acquire up to 2,421,308 shares of Common Stock at an exercise price of $0.315 per share pursuant to stock options awarded to the reporting person on February 15, 2006 under the 2005 Plan. These options are fully vested. The 2005 Plan and the form of Stock Option Agreement and Notice of Option Grant for these stock options are incorporated herein by reference as Exhibits 99.1 and 99.2, respectively, to this Schedule 13D. · The reporting person may acquire up to 288,888 shares of Common Stock at an exercise price of $0.585 per share pursuant to stock options awarded to the reporting person on November 27, 2007 under the 2005 Plan. Of the shares subject to these options, 72,222 are subject to a time-vested option, 72,222 are subject to a performance-vested option and 144,444 are subject to an exit-vested option. The exit-vested option vested in full upon the closing of the issuer’s initial public offering. Subject to the reporting person’s continuing service, the time-vested option vests and becomes exercisable as follows: (i) 25% of the option vests on the first anniversary of the vesting commencement date, (ii) an additional 2% of the option vests on each monthly anniversary of the vesting commencement date for the thirty-three months following the first anniversary of the vesting commencement date and (iii) an additional 3% of the option vests on each of the 46th, 47th and 48th monthly anniversaries of the vesting commencement date. The vesting commencement date for the time-vested portion of the option is November 27, 2007. Subject to the reporting person’s continuing service, the performance-vested option vests and becomes exercisable as follows: beginning with fiscal year 2008 and ending with fiscal year 2011, 25% of the option vests for each fiscal year in which the issuer’s performance targets (as defined in the stock option award), based on the issuer’s annual revenue and annual EBITDA, are achieved. For any fiscal year in which the annual performance targets are not achieved, such portion will vest if in any subsequent fiscal year the cumulative revenue and EBITDA targets are achieved (the cumulative targets are defined in the stock option award). The 2005 Plan and the form of Stock Option Agreement and Notice of Option Grant for these stock options are incorporated herein by reference as Exhibits 99.1 and 99.2, respectively, to this Schedule 13D. · The reporting person may acquire up to an aggregate of 666,666 shares of Common Stock at an exercise price of $10.50 per share pursuant to a stock option awarded to the reporting person on April 14, 2009, under the 2009 Plan. Subject to the reporting person’s continuing service, this option vests and becomes exercisable as follows: (i) 25% of the option vests on the first anniversary of the vesting commencement date, (ii) an additional 2% of the option vests on each monthly anniversary of the vesting commencement date for the thirty-three months following the first anniversary of the vesting commencement date and (iii) an additional 3% of the option vests on each of the 46th, 47th and 48th monthly anniversaries of the vesting commencement date. The vesting commencement date for this option is April 14, 2009. The 2009 Plan and the form of Nonstatutory Stock Option Agreement for this stock option are incorporated herein by reference as Exhibits 99.3 and 99.4, respectively, to this Schedule 13D. · The reporting person may acquire up to an aggregate of 125,100 shares of Common Stock at an exercise price of $15.81 pursuant to a stock option awarded to the reporting person on August 5, 2010, under the 2009 Plan. Subject to the reporting person’s continuing service, this option vests and becomes exercisable as follows: (i) 25% of the option vests on the first anniversary of the vesting commencement date, (ii) an additional 2% of the option vests on each monthly anniversary of the vesting commencement date for the thirty-three months following the first anniversary of the vesting commencement date and (iii) an additional 3% of the option vests on each of the 46th, 47th and 48th monthly anniversaries of the vesting commencement date. The vesting commencement date for this option is August 5, 2010. The 2009 Plan and the form of Nonstatutory Stock Option Agreement for this stock option are incorporated herein by reference as Exhibits 99.3 and 99.4, respectively, to this Schedule 13D. · The reporting person may acquire up to an aggregate of 134,160 shares of Common Stock at an exercise price of $17.10 pursuant to a stock option awarded to the reporting person on March 31, 2011, under the 2009 Plan. Subject to the reporting person’s continuing service, this option vests and becomes exercisable as follows: (i) 25% of the option vests on the first anniversary of the vesting commencement date, (ii) an additional 2% of the option vests on each monthly anniversary of the vesting commencement date for the thirty-three months following the first anniversary of the vesting commencement date and (iii) an additional 3% of the option vests on each of the 46th, 47th and 48th monthly anniversaries of the vesting commencement date. The vesting commencement date for this option is March 31, 2011. The 2009 Plan is incorporated by reference as Exhibit 99.3 to this Schedule 13D, and the form of Nonstatutory Stock Option Agreement for this stock option is filed as Exhibit 99.5 to this Schedule 13D. · The reporting person is a party to a Second Amended and Restated Registration Rights Agreement dated August 26, 2009, among the issuer, Warburg Pincus and certain other security holders of the issuer pursuant to which the reporting person possesses certain registration rights relating to Common Stock which the reporting person has or may acquire. This agreement is incorporated by reference as Exhibit 99.6 to this Schedule 13D. On August 11, 2010, the reporting person entered into a Trading Plan with Charles Schwab & Co., Inc. (the “broker”) to sell shares of Common Stock that may be acquired upon the exercise of stock options. See Item 4 of this Schedule 13D for a description of the Trading Plan. The form of the Trading Plan is incorporated by reference as Exhibit 99.7 to this Schedule 13D. |