Net loss per common stock

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Net loss per common stock

10. Net loss per common stock

Basic and diluted net loss per common stock is computed by dividing net loss by the weighted average number of common stock outstanding. The Company excluded the following outstanding stock options, restricted stock units and the non-voting convertible preferred stock from the computation of basic and diluted net loss per common stock as the effect would have been antidilutive for all periods presented.

	THREE MONTHS ENDED SEPTEMBER 30,				NINE MONTHS ENDED SEPTEMBER 30,
	2019		2018		2019		2018
Outstanding stock options		6,203,993		3,357,264		6,203,993		3,357,264
Restricted stock units		72,000		—		72,000		—
Common stock to be issued on conversion of convertible preferred stock		10,192,700		—		10,192,700		—
		16,468,693		3,357,264		16,468,693		3,357,264