Net Income (Loss) Per Share

3 Months Ended

Mar. 31, 2019

Basic net income (loss) per share attributable to common stockholders is computed by dividing net income (loss) attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. Diluted net income (loss) per share is computed by dividing net income (loss) attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period, adjusted for the effects of dilutive shares of common stock, which are comprised of outstanding stock options, RSUs, ESPP obligations, the Notes and the Warrants. Stock awards with performance conditions are included in dilutive shares to the extent the performance condition is met. The dilutive potential shares of common stock are computed using the treasury stock method or the as-if converted method, as applicable. The effects of outstanding stock options, RSUs, ESPP obligations, Notes and Warrants are excluded from the computation of diluted net income (loss) per share in periods in which the effect would be antidilutive.

The following tables present the calculation of basic and diluted net income (loss) per share attributable to common stockholders (in thousands, except share and per share data):



	Three Months Ended March 31,
	2019			2018
Numerator:
Net income (loss)	$	(1,545	)	$	10,622
Denominator:
Weighted-average shares outstanding - basic	182,061,579			175,482,833
Weighted-average effect of potentially dilutive securities:
Common stock options	—			1,995,185
RSUs	—			5,869,792
ESPP obligations	—			7,510
In-the-money portion of 2018 Notes	—			3,794,221
2018 Warrants	—			2,363,658
In-the-money portion of 2022 Notes	—			736,587
Weighted-average shares outstanding - diluted	182,061,579			190,249,786
Net income (loss) per share - basic	$	(0.01	)	$	0.06
Net income (loss) per share - diluted	$	(0.01	)	$	0.06

Potentially dilutive securities that are not included in the calculation of diluted net income (loss) per share because doing so would be antidilutive are as follows:



	Three Months Ended March 31,
	2019	2018
Common stock options	1,579,022	—
RSUs	12,161,981	38,114
ESPP obligations	211,771	—
2018 Warrants	2,853,811	—
2022 Notes	5,806,936	—
2022 Warrants	5,806,936	5,806,933
Total potentially dilutive securities	28,420,457	5,845,047