(8)

Warrants

As of December 31, 2012, the Company had outstanding warrants to purchase 35,778 shares of common stock at a weighted-average exercise price of $4.84 per share. The warrants contained a customary cashless exercise feature, which allowed the warrant holder to pay the exercise price of the warrant by forfeiting a portion of the exercised warrant shares with a value equal to the aggregate exercise price. As part of the IPO, the warrants were exchanged for 24,955 shares of the Company’s common stock in a cashless exercise. As of March 31, 2013, the Company had no outstanding warrants.