Net Loss Per Share

12 Months Ended

Dec. 31, 2020

Basic net loss per share is computed by dividing net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. The weighted-average number of shares of common stock outstanding does not include any potentially dilutive securities or any unvested restricted shares of common stock. These unvested restricted shares, although classified as issued and outstanding at December 31, 2020 and December 31, 2019, are considered contingently returnable until the restrictions lapse and will not be included in the basic net loss per share calculation until the shares are vested. Unvested shares of our restricted stock do not contain non-forfeitable rights to dividends and dividend equivalents. Vested RSUs (for which shares of common stock have not yet been delivered) are included in the calculations of basic net loss per share. Unvested RSUs are not included in calculations of basic net loss per share, as they are not considered issued and outstanding at time of grant.

Diluted net loss per share is computed by giving effect to all potential shares of common stock, including stock options, preferred stock, RSUs, and unvested restricted stock awards, to the extent they are dilutive. For the year ended December 31, 2020, all such common stock equivalents have been excluded from diluted net loss per share as the effect to net loss per share would be anti-dilutive (due to the net losses).

The following table sets forth the computation of the Company’s basic and diluted net loss per share (in thousands, except per share data):


	Year Ended December 31,
Numerator:	2020		2019
Net loss	$	(7,421)	$	(7,761)
Less: preferred stock dividends	17		27
Less: undeclared dividends	$	788	$	—
Net loss attributable to common stockholders	$	(8,226)	$	(7,788)
Denominator:
Weighted-average number of shares of common stock for basic net loss per share	5,547		5,108







Basic and diluted net loss per share	$	(1.48)	$	(1.52)

The weighted-average number of shares for the years ended December 31, 2020 and 2019 includes 28,904 and 28,904 shares, respectively, of vested RSUs, as discussed in Note 13 - Stock Based Compensation.

The following table represents the potential shares that were excluded from the computation of weighted-average number of shares of common stock in computing the diluted net loss per share for the periods presented because including them would have had an anti-dilutive effect:


	Year Ended December 31,
	2020	2019
Unvested restricted stock units	—	23,334

Outstanding stock options	107,500	215,345
Unvested restricted stock awards	627	627
Shares of common stock issuable upon conversion of Series A-2 preferred stock	18,161	10,978

Shares of common stock issuable upon conversion of Series C preferred stock	—	158,333
Shares of common stock issuable upon conversion of Series D preferred stock	17,020,100	17,349,010
Shares of common stock issuable upon conversion of Series E preferred stock	1,315,790	1,315,790
Warrants	1,146,500	72,394