Net Loss per Share (Tables)

12 Months Ended

Dec. 31, 2020

Schedule of Earnings Per Share, Basic and Diluted

Basic and diluted net loss per share attributable to common stockholders was calculated as follow:


	Year Ended December 31,
(in thousands, except per share data)	2020		2019		2018
Numerator:
Net loss	$	(62,131)	$	(52,807)	$	(33,285)
Accruing dividends on Series A convertible preferred stock	—		(592)		(3,000)
Adjustment to accumulated deficit in connection with repurchase of Series Seed convertible preferred stock	—		—		(22)
Net loss attributable to common stockholders	$	(62,131)	$	(53,399)	$	(36,307)
Denominator:
Weighted average shares of common stock—basic and diluted	20,077		11,530		459
Net loss per share attributable to common stockholders— basic and diluted	$	(3.09)	$	(4.63)	$	(79.15)

Schedule of Anti-dilutive Securities Excluded from Computation of Diluted Net Loss per Share Attributable to Common Stockholders

The Company excluded the following potential shares of common stock, presented based on amounts outstanding at each period end and adjusted for the Exchange Ratio and Reverse Stock Split, from the computation of diluted net loss per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect:


	Year Ended December 31,
	2020	2019	2018
Options to purchase common stock	1,874,514	1,297,029	798,311
Convertible preferred stock (as converted to common stock)	—	—	3,808,894
Unvested restricted stock units	572,460	101,773	—
Warrants to purchase common stock (excluding prefunded warrants, which are included in basic shares outstanding)	9,474,403	9,776,871	489,079
	11,921,377	11,175,673	5,096,284