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Net Loss per Share Attributable to Common Stockholders | 3 Months Ended
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Apr. 30, 2019
Earnings Per Share [Abstract] |
Net Loss per Share Attributable to Common Stockholders | Net Loss per Share Attributable to Common Stockholders The following table presents the calculation of basic and diluted net loss per share attributable to common stockholders for periods presented:
| Three Months Ended April 30,
(in thousands, except per share data) | 2019 |  | 2018
Numerator: |  |  |
Net loss | $ | (45,722 | ) |  | $ | (270,687 | )
Less: preferred stock accretion | — |  |  | (353 | )
Net loss attributable to common stockholders | $ | (45,722 | ) |  | $ | (271,040 | )
Denominator: |  |  |
Weighted-average common shares outstanding | 172,101 |  |  | 36,334 |
Net loss per share attributable to common stockholders: |  |  |
Basic and diluted | $ | (0.27 | ) |  | $ | (7.46 | )
Outstanding potentially dilutive securities that were excluded from the diluted per share calculations because they would have been antidilutive are as follows:
| April 30,
(in thousands) | 2019 |  | 2018
Convertible preferred stock as-converted | — |  |  | 100,350 |
Stock options | 10,989 |  |  | 18,477 |
Warrants to purchase convertible preferred stock | — |  |  | 22 |
RSUs | 14,620 |  |  | 15,002 |
ESPP | 288 |  |  | — |
Total antidilutive securities | 25,897 |  |  | 133,851 |
The table above does not include 0.4 million RSUs outstanding as of April 30, 2019, as these RSUs are subject to operating and stock price targets that were not considered to be met as of the reporting period.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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