Net Loss Per Share (Tables)

6 Months Ended

Jun. 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 June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
Numerator:
Net loss	$	(4,797,270	)	$	(4,102,729	)	$	(10,168,116	)	$	(9,482,676	)
Denominator:
Weighted-average shares outstanding-basic and diluted		28,657,384			28,375,379			28,629,189			26,549,895
Net loss per share, basic and diluted	$	(0.17	)	$	(0.14	)	$	(0.36	)	$	(0.36	)

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:

	Six Months Ended June 30,
	2019		2018
Options to purchase common stock		2,334,272		1,693,575
Common stock warrants		236,915		237,846
Restricted stock units		254,580		26,666
QNAH convertible note		788,971		766,381