Our Series A Preferred Stock is considered a participating security, which requires the use of the two-class method for the computation of basic and diluted per share amounts. Under the two-class method, earnings available to common stockholders for the period are allocated between common stockholders and participating securities according to dividends accumulated and participation rights in undistributed earnings. Net loss attributable to common stockholders is not allocated to the convertible preferred stock as the holder of the Series A Preferred Stock does not have a contractual obligation to share in losses. Basic net loss attributable to common stockholders per share is computed by dividing net loss available to common stockholders by the weighted-average number of shares of common stock outstanding for the period. Diluted net loss attributable to common stockholders per share is computed by dividing the net loss available to common stockholders for the period by the weighted average number of common and common equivalent shares outstanding during the period. Diluted net loss attributable to common stockholders per share reflects all potential dilutive common stock equivalent shares, including conversion of preferred stock, stock options, restricted stock units and shares to be issued under our employee stock purchase program.


	Three Months Ended June 30,				Six Months Ended June 30,
	2026		2025		2026		2025
Numerator:
Net loss attributable to common stockholders	$	(37,511)	$	(29,783)	$	(55,618)	$	(39,755)
Denominator:
Shares used in per share calculation – basic	31,780		30,404		31,458		30,202
Dilutive effect of common stock	—		—		—		—
Shares used in per share calculation – diluted	31,780		30,404		31,458		30,202
Net loss attributable to common stockholders per share – basic and diluted	$	(1.18)	$	(0.98)	$	(1.77)	$	(1.32)

For each of the three and six months ended June 30, 2026 and 2025, 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):


	Three Months Ended June 30,		Six Months Ended June 30,
	2026	2025	2026	2025
Convertible preferred stock	3,962	3,735	3,933	3,708
Restricted stock units	1,864	2,038	2,133	1,676
Performance-based stock units	1,135	385	1,135	420
Common stock options	100	211	100	212
Employee stock purchase program	94	45	7	15
Total	7,155	6,414	7,308	6,031