Convertible Preferred Stock and Detachable Warrants	9 Months Ended
Sep. 30, 2014
Convertible Preferred Stock and Detachable Warrants
Convertible Preferred Stock and Detachable Warrants	8. Convertible Preferred Stock and Detachable Warrants Convertible Preferred Stock At December 31, 2013, we had 52,953,684 authorized shares of Convertible Preferred Stock, of which 18,777,860 were designated for Series A Preferred Stock, 15,275,824 were designated for Series B Preferred Stock and 18,900,000 were designated for Series C Preferred Stock. In June 2013, we issued 6,396,065 shares of Series C Preferred Stock at $1.1845 per share for proceeds of $7,530,335, net of issuance costs of $45,804. In addition, we issued 2,330,955 shares of Series C Preferred Stock from the conversion of the remaining outstanding $2,761,019 in Series C Convertible Notes, including related accrued interest of $461,019 (as described in Note 6). In April 2014, we issued 422,119 shares of Series C Preferred Stock. Proceeds of $500,000 related to this issuance were received in 2013 and are reflected as an investor deposit in accrued expenses on the balance sheet as of December 31, 2013. In connection with the closing our initial public offering during the third quarter of 2014, all outstanding shares of preferred stock were converted to 7,661,871 shares of common stock and the authorized shares of preferred stock were adjusted to 25,000,000 shares. Detachable Warrants At December 31, 2013, we had Series B Warrants outstanding to purchase 3,055,163 shares of our Series B Preferred Stock at an exercise price of $1.67 per share. Since the Series B Preferred Stock underlying the Series B Warrants were able to be redeemed for cash upon an event that was not within our control, these warrants were classified as a derivative liability on our balance sheets with subsequent changes to fair value recorded through earnings at each reporting period on our statement of operations as change in fair value of warrant liability. In accordance with the terms of the Series B Warrants, these warrants terminated in connection with the closing of our initial public offering during the third quarter of 2014.

8. Convertible Preferred Stock and Detachable Warrants

Convertible Preferred Stock

At December 31, 2013, we had 52,953,684 authorized shares of Convertible Preferred Stock, of which 18,777,860 were designated for Series A Preferred Stock, 15,275,824 were designated for Series B Preferred Stock and 18,900,000 were designated for Series C Preferred Stock.

In June 2013, we issued 6,396,065 shares of Series C Preferred Stock at $1.1845 per share for proceeds of $7,530,335, net of issuance costs of $45,804. In addition, we issued 2,330,955 shares of Series C Preferred Stock from the conversion of the remaining outstanding $2,761,019 in Series C Convertible Notes, including related accrued interest of $461,019 (as described in Note 6). In April 2014, we issued 422,119 shares of Series C Preferred Stock. Proceeds of $500,000 related to this issuance were received in 2013 and are reflected as an investor deposit in accrued expenses on the balance sheet as of December 31, 2013.

In connection with the closing our initial public offering during the third quarter of 2014, all outstanding shares of preferred stock were converted to 7,661,871 shares of common stock and the authorized shares of preferred stock were adjusted to 25,000,000 shares.

Detachable Warrants

At December 31, 2013, we had Series B Warrants outstanding to purchase 3,055,163 shares of our Series B Preferred Stock at an exercise price of $1.67 per share. Since the Series B Preferred Stock underlying the Series B Warrants were able to be redeemed for cash upon an event that was not within our control, these warrants were classified as a derivative liability on our balance sheets with subsequent changes to fair value recorded through earnings at each reporting period on our statement of operations as change in fair value of warrant liability. In accordance with the terms of the Series B Warrants, these warrants terminated in connection with the closing of our initial public offering during the third quarter of 2014.