Net Loss

12 Months Ended

Dec. 31, 2021

Net loss

Net Loss

13. Net Loss

Basic and diluted net loss per share attributable to common stockholders was calculated as follows (in thousands, except share and per share amounts):

	Year Ended December 31,
	2021		2020
Numerator:
Net loss and comprehensive loss	$	(22,169)	$	(12,819)
Accretion of redeemable convertible preferred stock to redemption value		—		(90)
Net loss attributable to common stockholders	$	(22,169)	$	(12,909)
Denominator:
Weighted average common shares outstanding basic and diluted		27,957,904		5,485,032
Net loss per share attributable to common stockholders, basic and diluted	$	(0.79)	$	(2.35)

The Company’s potential dilutive securities have been excluded from the computation of diluted net loss per share as the effect would be to reduce the net loss per share. Therefore, the weighted average number of common shares outstanding used to calculate both basic and diluted net loss per share attributable to common stockholders is the same. The Company excluded the following potential common shares, presented based on amounts outstanding at each period end, 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:

	December 31,
	2021	2020
Warrants to purchase common stock	92,703	92,703
Options to purchase common stock	2,747,041	3,405,698
Restricted stock units	187,764	—
	3,027,508	3,498,401