Basic and diluted net loss per share is computed by dividing net loss attributable to common stockholders by the weighted average number of common shares outstanding during the period. Diluted earnings per share is calculated using our weighted average outstanding common shares including the dilutive effect of stock awards. In periods when the Company recognizes a net loss, the Company excludes the impact of outstanding stock awards from the diluted loss per share calculation as their inclusion would have an anti-dilutive effect.

The following table sets forth the calculation of basic and diluted net loss per share for the periods presented:

	Three Months Ended
	March 31, 2020			March 31, 2019
	(In thousands, except per share data)
Numerator
Net loss	$	(8,417	)	$	(8,390	)
Net loss attributable to common stockholders	$	(8,417	)	$	(8,390	)

Denominator
Weighted average shares outstanding
Basic		89,862			88,295
Diluted		89,862			88,295

Net loss attributable to common stockholders per share
Basic		(0.09	)		(0.10	)
Diluted		(0.09	)		(0.10	)

The following weighted average outstanding shares of common stock equivalents were excluded from the computation of the diluted net loss per share attributable to common stockholders for the periods presented because their effect would have been anti-dilutive:

	Three Months Ended
	March 31, 2020		March 31, 2019
	(in thousands)
Stock options to purchase common stock		2,994		3,080
RSUs issued and outstanding		2,492		1,638
ESPP		179		192
Total		5,665		4,910

As we expect to settle the principal amount of the Notes in cash and any excess in shares of the Company’s common stock, the Company uses the treasury stock method for calculating any potential dilutive effect of the conversion spread on diluted net income per share, if applicable. The conversion spread of 14.1 million shares will have a dilutive impact on diluted net income per share of common stock when the average market price of our common stock for a given period exceeds the conversion price of $28.42 per share.