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,
	2023			2022			2021
Numerator:
Net loss	$	(8,566	)	$	(39,347	)	$	(28,085	)
Accretion of preferred stock to redemption value		—			—			(13	)
Net loss attributable to common stockholders - basic and diluted	$	(8,566	)	$	(39,347	)	$	(28,098	)
Denominator:
Weighted average common shares outstanding - basic and diluted		114,828,494			107,935,514			71,168,054
Net loss per share attributable to common stockholders - basic and diluted	$	(0.07	)	$	(0.36	)	$	(0.39	)

For periods in which the Company is in a loss position, basic net loss per share attributable to common stockholders is the same as diluted net loss per share attributable to common stockholders. Outstanding potentially dilutive securities, which were excluded from the diluted net loss per share calculations because they would have been antidilutive were as follows as of the dates presented:


	Year Ended December 31,
	2023		2022		2021
Unvested restricted stock units		4,430,725		2,934,442		213,121
Stock options to purchase common stock		8,107,861		12,160,560		14,855,292
		12,538,586		15,095,002		15,068,413