Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2018

Schedule of Anti-dilutive Weighted-Average Equity Instruments Excluded from Calculation of Diluted Net Loss Per Share

The following weighted-average equity instruments were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the periods presented:

	Nine Months Ended
	September 30, 2018		September 30, 2017
Awards under equity incentive plan		2,634,295		1,607,078
Unvested restricted shares and restricted stock units		173,422		78,396
Derivative call option		—		650,000
Warrants to purchase common stock		1,665,170		1,293,684
Total		4,472,887		3,629,158