11. Common Stock and Net Loss Per Share

        Each share of common stock has the right to one vote per share. The holders of common stock are also entitled to receive dividends as and when declared by our board of directors, whenever funds are legally available. These rights are subordinate to the dividend rights of holders of all classes of stock outstanding at the time.

        Basic net loss per share is computed by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. Diluted net loss per share is computed by giving effect to all potential shares of common stock, including stock options, convertible preferred stock warrants and redeemable convertible preferred stock, to the extent dilutive. Basic and diluted net loss per share was the same for each year presented as the inclusion of all potential common shares outstanding would have been anti-dilutive.

        The following table sets forth the computation of historical basic and diluted net loss per share.

        Net loss was increased by the cumulative dividends payable upon conversion or liquidation of redeemable convertible preferred shares earned in the twelve months ended January 31, 2012 to arrive at net loss attributable to common stockholders. For the twelve months ended January 31, 2012 dividends were accrued up through the conversion at the close of the IPO.

        The following potential common shares were excluded from the computation of diluted net loss per share because including them would have been anti-dilutive: