Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2019

Numerator and Denominator Used in Computing Basic and Diluted Net Loss per Share

The following table provides the numerator and denominator used in computing basic and diluted net loss per share for the periods indicated:

	Three Months Ended September 30,							Nine Months Ended September 30,
	2019			2018			2019				2018
Numerator:
Net loss	$	(4,740,232	)	$	(4,843,408	)	$		(14,908,348	)	$	(14,326,084	)
Denominator:
Weighted-average shares outstanding-basic and diluted		31,367,044			28,434,406				29,551,836			27,184,968
Net loss per share, basic and diluted	$	(0.15	)	$	(0.17	)	$		(0.50	)	$	(0.53	)

Outstanding Securities Excluded from Computation of Diluted Net Loss per Share

The following outstanding securities were excluded from the computation of diluted net loss per share for the periods presented because their effect would have been anti-dilutive:

	Nine Months Ended September 30,
	2019		2018
Options to purchase common stock		2,940,990		2,148,323
Common stock warrants		236,915		237,846
Restricted stock units		247,079		249,166
QNAH convertible note		794,665		772,075