Net loss per share (Tables)

9 Months Ended

Sep. 30, 2019

Net loss per share

Schedule of outstanding potentially dilutive securities that have been excluded in the calculation of diluted net loss per share

	September 30,
	2019	2018
Unvested restricted common stock and restricted stock units	422,336	376,949
Outstanding stock options	2,662,334	2,565,895
Outstanding warrants	10,000	76,041
Total	3,094,670	3,018,885