Net Loss Per Share Attributable to Common Stockholders

12 Months Ended

Dec. 31, 2023

Net Loss Per Share Attributable to Common Stockholders

The following table sets forth the computation of basic and diluted net loss attributable to common stockholders per share (in thousands, except per share amounts):


	Year Ended December 31,
	2023		2022		2021
Basic
Net loss attributable to common stockholders	$	(66,515)	$	(119,414)	$	(122,942)
Shares used in per share calculation – basic	28,016		27,359		26,781
Net loss attributable to common stockholders per share – basic	$	(2.37)	$	(4.36)	$	(4.59)

Diluted:
Net loss attributable to common stockholders	$	(66,515)	$	(119,414)	$	(122,942)
Shares used in per share calculation – basic	28,016		27,359		26,781
Dilutive effect of common stock	—		—		—
Shares used in per share calculation – diluted	28,016		27,359		26,781
Net loss attributable to common stockholders per share – diluted	$	(2.37)	$	(4.36)	$	(4.59)

For each of the years ended December 31, 2023, 2022 and 2021, we had securities outstanding that could potentially dilute net loss per share, but the shares from the assumed conversion or exercise of these securities were excluded in the computation of diluted net loss per share as their effect would have been anti-dilutive. The number of weighted-average outstanding anti-dilutive shares that were excluded from the computation of diluted net loss per share consisted of the following (in thousands):


	Year Ended December 31,
	2023	2022	2021
Convertible preferred stock	3,340	3,102	1,905
Restricted stock units	2,255	1,551	1,075
Performance-based stock units	154	—	3
Common stock options	221	271	333
Employee stock purchase program	51	65	29
Total	6,021	4,989	3,345