Note 18 - Net Loss Per Share Attributable to Common Stockholders

12 Months Ended

Dec. 31, 2020

Notes to Financial Statements

Earnings Per Share [Text Block]

NOTE

18.

  Net Loss Per Share Attributable to Common Stockholders

The following table presents the calculation of basic and diluted net loss per share (in thousands, except share and per share amounts):

	Year Ended December 31,
	2020			2019			2018
Net loss	$	(32,220	)	$	(18,645	)	$	(18,007	)
Series B and C preferred dividend		—			—			(339	)
Net loss attributable to common stockholders	$	(32,220	)	$	(18,645	)	$	(18,346	)
Shares used to compute net loss per share, basic and diluted		88,295,762			21,569,523			6,316,065
Net loss per share attributable to common stockholders, basic and diluted	$	(0.36	)	$	(0.86	)	$	(2.90	)

No

adjustment has been made to the net loss attributable to common stockholders as the effect would be anti-dilutive due to the net loss.

The following potentially dilutive securities were excluded from the computation of diluted weighted average shares outstanding because they would have been antidilutive:

	Year Ended December 31,
	2020		2019		2018
Options to purchase common stock		4,409,806		1,583,575		839,396
Warrants to purchase common stock		14,773,425		17,579,945		9,658
Warrant to purchase convertible preferred stock		—		—		891
Series B and C convertible preferred stock outstanding, including cumulative dividends		—		—		213,760
Series A convertible preferred stock outstanding		—		—		12,260
Convertible promissory notes, related party (as converted)		—		—		185,159
Total potentially dilutive securities excluded from denominator of the diluted earnings per share computation		19,183,231		19,163,520		1,261,124