Net Loss per Share Attributable to Common Stockholders (Tables)

12 Months Ended

Jan. 31, 2020

Earnings Per Share [Abstract]

Calculation of basic and diluted loss per share

The following table presents the calculation of basic and diluted net loss per share attributable to common stockholders for periods presented:

	Year Ended January 31,
(in thousands, except per share data)	2020		2019		2018
Numerator:
Net loss	$	(208,359)	$	(426,458)	$	(52,276)
Less: preferred stock accretion	—		(353)		(1,461)
Net loss attributable to common stockholders	$	(208,359)	$	(426,811)	$	(53,737)
Denominator:
Weighted-average common shares outstanding	176,704		135,163		32,294
Net loss per share attributable to common stockholders:
Basic and diluted	$	(1.18)	$	(3.16)	$	(1.66)

Antidilutive securities

Outstanding potentially dilutive securities that were excluded from the diluted per share calculations because they would have been antidilutive are as follows:

	January 31,
(in thousands)	2020	2019	2018
RSUs	13,555	16,568	—
Stock options	6,882	13,648	19,832
ESPP	274	295	—
Convertible senior notes	788	—	—
Convertible preferred stock as-converted	—	—	100,350
Warrants to purchase convertible preferred stock	—	—	22
Warrants to purchase common stock	—	—	18
Total antidilutive securities	21,499	30,511	120,222