S-I/A Options As of September 30, 2015, we had outstanding options to purchase an aggregate of 106,133.176 shares of our Class B common stock, with a weighted-average exercise price of approximately $6.95 per share. under our equity compensation plans. 177 Table of Contents RSUs As of September 30, 2015, there were 100,900 shares of our Class B common stock issuable upon the vesting of RSUs under our equity compensation plans. Warrants As of September 30, 2015, we had outstanding warrants to purchase an aggregate of 9,543,640 shares of our capital stock, with a weighted-average exercise price of approximately $10.92 per share. Registration Rights After the completion of this offering, certain holders of our Class B common stock will be entitled to rights with respect to the registration of their shares under the Securities Act. These registration rights are contained in our amended and restated investors' rights agreement (IRA). We and certain holders of our Class B common stock and preferred stock are parties to the IRA. The registration rights set forth in the IRA will expire five years following the completion of this offering, or, with respect to any particular stockholder, when such stockholder is able to sell all of its shares entitled to registration rights pursuant to Rule 144 or another similar exemption under the Securities Act during any 90-day period. We will pay the registration expenses (other than underwriting discounts and commissions and stock transfer taxes) of the holders of the shares registered pursuant to the registrations described below. Demand Registration Rights After the completion of this offering, the holders of up to 150,009.457 shares of our Class B common stock (including shares issuable pursuant to the exercise of warrants to purchase shares of our capital stock that were outstanding as of September 30, 2015) will be entitled to certain demand registration rights. At any time beginning 180 days after the effec