Net Loss Per Share Attributable to Common Stockholders (Tables)

12 Months Ended

Dec. 31, 2021

Computation 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 (in thousands, except share and per share data):

	Year Ended December 31,
	2021			2020			2019
Numerator:
Net loss attributable to common stockholders	$	(49,762	)	$	(34,495	)	$	(41,975	)
Denominator:
Weighted-average shares outstanding		35,262,987			24,783,287			12,669,367
Less: weighted-average shares of restricted stock that are subject to repurchase		(10,544	)		(61,512	)		(172,410	)
Weighted-average shares used in computing net loss per share attributable to common stock, basic and diluted		35,252,443			24,721,775			12,496,957
Net loss per share attributable to common stockholders, basic and diluted	$	(1.41	)	$	(1.40	)	$	(3.36	)

Schedule of Outstanding Shares of Potentially Dilutive Securities Excluded From the 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 periods presented because including them would have been antidilutive:

	As of December 31,
	2021		2020		2019
Options to purchase common stock		3,620,666		2,591,456		1,962,332
Restricted stock		—		14,625		14,625
Restricted stock acquired upon early exercise of stock options		—		14,460		84,964
Total		3,620,666		2,620,541		2,061,921