Net Loss Per Share Attributable to Common Stockholders (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Schedule of basic and diluted net loss per share attributable to common stockholders

	Three Months Ended September 30,						Nine Months Ended September 30,
	2021			2020			2021			2020
Numerator:
Net loss attributable to common stockholders	$	(3,412	)	$	(10,825	)	$	(21,580	)	$	(21,682	)
Denominator:
Weighted average common shares outstanding		5,696,303			2,695,264			3,775,454			2,695,264
Less: Weighted-average unvested restricted shares		(650,186	)		(932,564	)		(720,254	)		(1,002,837	)
Less: Weighted-average shares subject to earnout		(79,891	)		—			(26,923	)		—
Weighted average shares used to compute basic and diluted net loss per share		4,966,226			1,762,700			3,028,277			1,692,427
Net loss per share attributable to common stockholders – basic and diluted	$	(0.69	)	$	(6.14	)	$	(7.13	)	$	(12.81	)

Schedule of diluted net loss per share attributable to common stockholders

	September 30,
	2021		2020
Outstanding and issued common stock options		2,721,557		2,998,303
Unvested restricted common stock		611,818		894,197
Redeemable convertible preferred stock		—		11,437,627
Total		3,333,375		15,330,127