Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Schedule of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders

The following table sets forth the computation of basic and diluted net loss per share attributable to common stockholders, which excludes unvested restricted shares and shares which are legally outstanding, but subject to repurchase by the Company (in thousands, except share and per share data):

	Year Ended December 31,
	2020			2019			2018
Numerator:
Net loss attributable to common stockholders	$	(36,678	)	$	(28,138	)	$	(9,299	)
Denominator:
Weighted-average shares outstanding		7,319,977			2,148,317			2,049,680
Less: weighted-average unvested restricted shares and shares subject to repurchase		—			(9,344	)		(102,704	)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted		7,319,977			2,138,973			1,946,976
Net loss per share attributable to common stockholders, basic and diluted	$	(5.01	)	$	(13.15	)	$	(4.78	)

Schedule of Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss Per Share

The following outstanding shares of potentially dilutive securities were excluded from the computation of diluted net loss per share attributable to common stockholders for the period presented because including them would have been antidilutive:

	December 31,
	2020		2019		2018
Redeemable convertible preferred stock (as converted to common stock)		—		12,048,671		4,971,762
Options to purchase common stock		3,706,945		1,860,646		896,539
Redeemable convertible preferred stock warrants		—		220,890		—
Common stock warrants		226,191		—		—
Unvested early exercised common stock options		—		—		27,709
Unvested restricted stock awards		—		—		31,183
Redeemable convertible preferred stock tranche liability and TRDF obligation		—		—		743,317
Total		3,933,136		14,130,207		6,670,510