3. LOSS PER COMMON SHARE

The Company computes basic and diluted loss per share using a methodology that gives effect to the impact of outstanding participating securities (the “two-class method”). For the three months ended March 31, 2019 and 2018, there was dilution attributed to the weighted-average shares outstanding in the calculation of diluted loss per share.


	Three Months Ended March 31,
	2019			2018
	(In thousands, except share and per share data)
Numerator:
Net loss	$	(9,415	)	$	(14,833	)
Net loss attributable to Series A Preferred Stock (a)		(21	)		(463	)

Income attributable to common stockholders – basic and diluted	$	(9,394	)	$	(14,370	)

Denominator:
Weighted-average number of common shares used in loss per share – basic and diluted		80,484,113			27,670,118

Loss per share - basic and diluted	$	(0.12	)	$	(0.52	)

(a)	The Series A Preferred Stock participates in income and losses.

The following potentially dilutive securities have been excluded from the computation of diluted weighted-average shares outstanding, as they would be anti-dilutive (in common stock equivalent shares):


	Three Months Ended March 31,
	2019		2018
Unvested restricted stock and options to purchase common stock		1,803,167		3,101,143
Series A Preferred Stock unconverted		177,996		622,987
Warrants exercisable into common stock		571,025		13,633,070