Earnings per Share

12 Months Ended

Dec. 31, 2020

Note 15 – Earnings per Share

Excluded from determination of diluted net loss attributable to common stockholders for the periods presented because inclusion would be anti-dilutive are the instruments below, the terms of which are described in further detail in Note 14 – Share Based Compensation. The potentially dilutive securities as of December 31, 2020 and 2019 primarily represent the shares subject to future issuance under stock options awards, warrants and RSUs and would be subject to the treasury stock method when dilutive. The number of common shares that convertible debt was assumed to convert to was based on the Company’s estimated common stock price as of December 31, 2019, as determined by the Company’s Board of Directors with assistance from a valuation firm.

	Year Ended December 31
	2020			2019
Numerator
Net loss attributable to common stockholders	$	(31,350	)	$	(30,726	)

Denominator
Weighted-average shares outstanding used in computing net loss per share, basic and diluted		4,838			242
Net loss per share, basic and diluted	$	(6.48	)	$	(126.97	)

The following outstanding common stock equivalents were excluded from diluted net loss attributable to common stockholders for the periods presented because inclusion would be anti-dilutive (in thousands):

	Year Ended December 31
	2020		2019
Options to purchase common stock		2,495		2,104
Convertible preferred stock		—		119,257
Warrants		103		1,538
Restricted stock units		79		26
Convertible debt		—		21,131
Total		2,677		144,056