Warrants	3 Months Ended
Mar. 31, 2016
Warrants.
Warrants	9. Warrants In 2009, the Company granted warrants to purchase 33,742 shares of Series B convertible preferred stock at an exercise price of $1.8908 per share. The warrants were granted to a financial institution in connection with a secured equipment loan and expire on November 2, 2019. In connection with the IPO in July 2015, these warrants were converted into the right to purchase common stock at a one-to-one ratio. Under the terms of the Senior Secured Term Loan, the Company granted approximately 376,691 warrants to purchase common stock with an exercise price of $2.3229 per common share, which expire on April 18, 2023. In connection with the IPO in July 2015, these warrants remain exercisable for common stock.

9. Warrants

In 2009, the Company granted warrants to purchase 33,742 shares of Series B convertible preferred stock at an exercise price of $1.8908 per share. The warrants were granted to a financial institution in connection with a secured equipment loan and expire on November 2, 2019. In connection with the IPO in July 2015, these warrants were converted into the right to purchase common stock at a one-to-one ratio.

Under the terms of the Senior Secured Term Loan, the Company granted approximately 376,691 warrants to purchase common stock with an exercise price of $2.3229 per common share, which expire on April 18, 2023. In connection with the IPO in July 2015, these warrants remain exercisable for common stock.