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Net Loss Per Share
 6 Months Ended
Jul. 31, 2019
Earnings Per Share [Abstract]  
Net Loss Per Share Net Loss Per Share
Basic net loss per share attributable to common stockholders is computed by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. Diluted net loss per share is computed by giving effect to all potential shares of common stock, including our outstanding stock options, outstanding warrants, common stock related to unvested RSUs and PRSUs, common stock related to convertible senior notes, and common stock issuable pursuant to the ESPP. Basic and diluted net loss per share was the same for each period presented, as the inclusion of all potential common shares outstanding would have been anti-dilutive.
The net loss per share attributable to common stockholders is allocated based on the contractual participation rights of the Class A common shares and Class B common shares as if the loss for the period had been distributed. As the liquidation and dividend rights are identical, the net loss attributable to common stockholders is allocated on a proportionate basis.
The following table presents the calculation of basic and diluted net loss attributable to common stockholders per share (in thousands, except per share data):
 
Three Months Ended July 31,
 
Six Months Ended July 31,
 
2019
 
2018
 
2019
 
2018
 
Class A
 
Class B
 
Class A
 
Class B
 
Class A
 
Class B
 
Class A
 
Class B
Net loss per share, basic and diluted:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Numerator:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Allocation of distributed net loss
$
(86,481
)
 
$
(34,231
)
 
$
(58,776
)
 
$
(27,380
)
 
$
(169,067
)
 
$
(67,920
)
 
$
(108,888
)
 
$
(51,678
)
Denominator:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Weighted-average common shares outstanding
162,193

 
64,199

 
147,310

 
68,622

 
160,414

 
64,443

 
145,475

 
69,042

Basic and diluted net loss per share
$
(0.53
)
 
$
(0.53
)
 
$
(0.40
)
 
$
(0.40
)
 
$
(1.05
)
 
$
(1.05
)
 
$
(0.75
)
 
$
(0.75
)

The anti-dilutive securities excluded from the weighted-average shares used to calculate the diluted net loss per common share were as follows (in thousands):
 
As of July 31,
 
2019
 
2018
Outstanding common stock options
4,512

 
5,832

Unvested RSUs and PRSUs
14,288

 
14,629

Shares related to the convertible senior notes
10,876

 
15,079

Shares subject to warrants related to the issuance of convertible senior notes
10,876

 
15,079

Shares issuable pursuant to the ESPP
394

 
418

 
40,946

 
51,037