Net Loss per Share Attributable to Common Stock

Net loss per share attributable to common stock is computed by dividing the net loss attributable to common stock by the weighted-average number of common shares outstanding. The Company has outstanding stock options, restricted stock units, options to purchase shares under its employee stock purchase plan, and convertible senior notes, which are considered in the calculation of diluted net income (loss) attributable to common stock per share whenever doing so would be dilutive.

The following table sets forth the calculation of basic and diluted net loss per share attributable to common stock during the periods presented:



	Three Months Ended March 31,
	2019			2018
Numerator
Net loss	$	(67,180	)	$	(36,439	)
Denominator
Weighted average shares - basic and diluted	90,610,416			82,010,913
Net loss per share
Net loss per share - basic and diluted	$	(0.74	)	$	(0.44	)

The following outstanding shares of common stock equivalents as of March 31, 2019 and 2018 were excluded from the computation of the diluted net loss per share attributable to common stock for the periods presented because their effect would have been anti-dilutive:



	Three Months Ended March 31,
	2019	2018
Stock options	8,713,162	11,821,024
Restricted stock units	3,588,275	1,152,718
Employee stock purchase plan	290,647	156,530
Total	12,592,084	13,130,272

There is no impact from the Convertible Senior Notes due 2023 (the "Notes") on its diluted net loss per share for the three months ended March 31, 2019 as the notes are accounted for based on the treasury stock method as the Company has the ability, and intent, to settle any conversions of the Notes solely in cash.