Net Loss Per Share Attributable to Common Shareholders

3 Months Ended

Mar. 31, 2020

Net Loss Per Share Attributable to Common Shareholders

13.	Net Loss Per Share Attributable to Common Shareholders

The Company calculates basic and diluted net loss per share attributable to common shareholders in conformity with the two-class method required for companies with participating securities.

The diluted net loss per share attributable to common shareholders is computed by giving effect to all potential dilutive common stock equivalents outstanding for the period. For purposes of this calculation, all common stock equivalents have been excluded from the calculation of diluted net loss per share attributable to common shareholders as their effect is antidilutive. As a result, basic and diluted net loss per common share was the same for each period presented.

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

	For the Three Months Ended March 31,
	2020			2019
Numerator:
Net loss attributable to common shareholders	$	(15,283	)	$	(10,354	)
Denominator:
Weighted-average common shares outstanding-basic		77,904			68,381
Dilutive effect of share equivalents resulting from stock options, restricted stock units, and ESPP shares		—			—
Weighted-average common shares outstanding-diluted		77,904			68,381
Net loss per common share, basic and diluted	$	(0.20	)	$	(0.15	)

The following weighted-average outstanding shares of common stock equivalents were excluded from the computation of diluted net loss per share attributable to common shareholders for the periods presented because the impact of including them would have been antidilutive (in thousands):

	For the Three Months Ended March 31,
	2020		2019
Options to purchase common shares		5,664		10,237
Unvested restricted stock units		1,554		631
Employee stock purchase plan shares		9		14
Total		7,227		10,882