Net Income (Loss) per Share Attributable to Common Stock (Tables)

9 Months Ended

Sep. 30, 2018

Schedule of Basic and Diluted Earnings Per Share

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



	Three Months Ended September 30,					Nine Months Ended September 30,
	2018		2017			2018			2017
Numerator:
Net income (loss)	$	3,475	$	10,558		$	(29,756	)	$	(13,203	)
Accretion of preferred stock	—		(40,224		)	—			(175,915		)
Net income (loss) attributable to common stock - basic and diluted	$	3,475	$	(29,666	)	$	(29,756	)	$	(189,118	)
Denominator:
Weighted average shares:
Basic	87,743,223		58,868,903			84,327,266			29,678,082
Dilutive shares from stock plans	6,899,240		—			—			—
Diluted	94,642,463		58,868,903			84,327,266			29,678,082
Net income (loss) per share:
Net income (loss) per share attributable to common stock - basic	$	0.04	$	(0.50	)	$	(0.35	)	$	(6.37	)
Net income (loss) per share attributable to common stock - diluted	$	0.04	$	(0.50	)	$	(0.35	)	$	(6.37	)

Summary of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following outstanding shares of common stock equivalents as of September 30, 2018 and 2017 were excluded from the computation of the diluted net income (loss) per share attributable to common stock for the periods presented because their effect would have been anti-dilutive:



	Three Months Ended September 30,		Nine Months Ended September 30,
	2018	2017	2018	2017
Redeemable convertible preferred stock	—	55,422,002	—	55,422,002
Options to purchase common stock	—	13,298,339	10,150,522	13,298,339
Restricted stock units	238,668	—	2,081,173	—
Total	238,668	68,720,341	12,231,695	68,720,341