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CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) | Total | Series B Redeemable Convertible Preferred Stock | Redeemable Convertible Preferred Stock | Common Stock Class A Common Stock | Common Stock Class B Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Accumulated Deficit
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Jan. 31, 2017 | 59,465,439 |  |  |  |  |  |  |  |
Beginning balance at Jan. 31, 2017 | $ 227,954,000 |  |  |  |  |  |  |  |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Issuance of Series B redeemable convertible preferred stock upon net exercise of warrants (in shares) |  |  | 26,201 |  |  |  |  |  |
Issuance of Series B redeemable convertible preferred stock upon net exercise of warrants |  |  | $ 408,000 |  |  |  |  |  |
Conversion of convertible preferred stock to common stock in connection with initial public offering (in shares) |  |  |  | (59,491,640) |  | 59,491,640 |  |  |
Conversion of convertible preferred stock to common stock in connection with initial public offering | $ 228,362,000 |  |  | $ (228,362,000) |  | $ 6,000 | $ 228,356,000 |  |
Ending balance (in shares) at Jan. 31, 2018 | 0 |  |  |  |  |  |  |  |
Ending balance at Jan. 31, 2018 | $ 0 |  |  |  |  |  |  |  |
Beginning balance (in shares) at Jan. 31, 2017 |  |  |  |  | 0 | 20,293,338 |  |  |
Beginning balance at Jan. 31, 2017 | (212,361,000) |  |  |  | $ 0 | $ 2,000 | 44,469,000 | $ (167,000) | $ (256,665,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Issuance of common stock upon exercise of stock options and other activity, net (in shares) |  |  |  |  | 8,274,599 | 900,517 |  |  |
Issuance of common stock upon exercise of stock options and other activity, net | 34,698,000 |  |  |  | $ 1,000 |  | 34,697,000 |  |
Issuance of common stock upon net exercise of warrant (in shares) |  |  |  |  |  | 168,750 |  |  |
Issuance of common stock in connection with initial public offering, net of underwriting discounts and issuance costs (in shares) |  |  |  |  | 12,650,000 |  |  |  |
Issuance of common stock in connection with initial public offering, net of underwriting discounts and issuance costs | 194,345,000 |  |  |  | $ 1,000 |  | 194,344,000 |  |
Conversion of convertible preferred stock to common stock in connection with initial public offering (in shares) |  |  |  | (59,491,640) |  | 59,491,640 |  |  |
Conversion of convertible preferred stock to common stock in connection with initial public offering | 228,362,000 |  |  | $ (228,362,000) |  | $ 6,000 | 228,356,000 |  |
Issuance of common stock and restricted stock in connection with acquisition (in shares) |  |  |  |  |  | 1,598,500 |  |  |
Issuance of common stock and restricted stock in connection with acquisition | 3,652,000 |  |  |  |  |  | 3,652,000 |  |
Issuance of common stock pursuant to charitable donation (in shares) |  |  |  |  | 24,287 |  |  |  |
Issuance of common stock pursuant to charitable donation | 708,000 | [1] |  |  |  |  | 708,000 |  |
Issuance of common stock under employee stock purchase plan (in shares) |  |  |  |  | 569,373 |  |  |  |
Issuance of common stock under employee stock purchase plan | 8,369,000 |  |  |  |  |  | 8,369,000 |  |
Conversion of Class B common stock to Class A common stock (in shares) |  |  |  |  | 49,091,639 | (49,091,639) |  |  |
Conversion of Class B common stock to Class A common stock | 0 |  |  |  | $ 5,000 | $ (5,000) |  |  |
Stock-based compensation | 50,858,000 |  |  |  |  |  | 50,858,000 |  |
Other comprehensive income | 558,000 |  |  |  |  |  |  | 558,000 |
Net loss | (109,849,000) | [1] |  |  | $ (31,980,000) | $ (77,869,000) |  |  | (109,849,000)
Ending balance (in shares) at Jan. 31, 2018 |  |  |  |  | 70,609,898 | 33,361,106 |  |  |
Ending balance at Jan. 31, 2018 | $ 199,340,000 |  |  |  | $ 7,000 | $ 3,000 | 565,653,000 | 391,000 | (366,714,000)
Ending balance (in shares) at Jan. 31, 2019 | 0 |  |  |  |  |  |  |  |
Ending balance at Jan. 31, 2019 | $ 0 |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Issuance of common stock upon exercise of stock options and other activity, net (in shares) |  |  |  |  | 6,465,957 | 104,084 |  |  |
Issuance of common stock upon exercise of stock options and other activity, net | 37,611,000 |  |  |  | $ 1,000 |  | 37,610,000 |  |
Issuance of common stock pursuant to charitable donation (in shares) |  |  |  |  | 20,000 |  |  |  |
Issuance of common stock pursuant to charitable donation | 1,008,000 | [1] |  |  |  |  | 1,008,000 |  |
Issuance of common stock under employee stock purchase plan (in shares) |  |  |  |  | 615,210 |  |  |  |
Issuance of common stock under employee stock purchase plan | 13,727,000 |  |  |  |  |  | 13,727,000 |  |
Issuance of common stock for settlement of RSUs (in shares) |  |  |  |  | 976,248 |  |  |  |
Conversion of Class B common stock to Class A common stock (in shares) |  |  |  |  | 22,406,009 | (22,406,009) |  |  |
Conversion of Class B common stock to Class A common stock | 0 |  |  |  | $ 2,000 | $ (2,000) |  |  |
Equity component of convertible senior notes, net of issuance costs | 77,631,000 |  |  |  |  |  | 77,631,000 |  |
Issuance of warrants related to 2023 convertible senior notes | 52,440,000 |  |  |  |  |  | 52,440,000 |  |
Purchases of hedges related to 2023 convertible senior notes | (80,040,000) |  |  |  |  |  | (80,040,000) |  |
Stock-based compensation | 76,867,000 |  |  |  |  |  | 76,867,000 |  |
Other comprehensive income | (710,000) |  |  |  |  |  |  | (710,000) |
Net loss | (125,497,000) | [1] |  |  | $ (107,926,000) | $ (17,571,000) |  |  | (125,497,000)
Ending balance (in shares) at Jan. 31, 2019 |  |  |  |  | 101,093,322 | 11,059,181 |  |  |
Ending balance at Jan. 31, 2019 | $ 252,377,000 | [2] |  |  | $ 10,000 | $ 1,000 | 744,896,000 | (319,000) | (492,211,000)
Ending balance (in shares) at Jan. 31, 2020 | 0 |  |  |  |  |  |  |  |
Ending balance at Jan. 31, 2020 | $ 0 |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Issuance of common stock upon exercise of stock options and other activity, net (in shares) | 5,422,281 |  |  |  | 5,323,410 | 100,007 |  |  |
Issuance of common stock upon exercise of stock options and other activity, net | $ 45,732,000 |  |  |  | $ 1,000 |  | 45,731,000 |  |
Issuance of common stock pursuant to charitable donation (in shares) |  |  |  |  | 15,000 |  |  |  |
Issuance of common stock pursuant to charitable donation | 1,746,000 |  |  |  |  |  | 1,746,000 |  |
Issuance of common stock under employee stock purchase plan (in shares) |  |  |  |  | 322,795 |  |  |  |
Issuance of common stock under employee stock purchase plan | $ 18,767,000 |  |  |  |  |  | $ 18,767,000 |  |
Issuance of common stock for settlement of RSUs (in shares) | 0 |  |  |  | 1,716,222 |  | 0 |  |
Issuance of common stock for settlement of bonus (in shares) |  |  |  |  | 34,600 |  | 2,809,000 |  |
Issuance of stock for settlement of bonus | $ 2,809,000 |  |  |  |  |  |  |  |
Conversion of Class B common stock to Class A common stock (in shares) |  |  |  |  | 2,511,409 | (2,511,409) |  |  |
Conversion of Class B common stock to Class A common stock | 0 |  |  |  |  | $ 0 |  |  |
Equity component of convertible senior notes, net of issuance costs | 217,347,000 |  |  |  |  |  | $ 217,347,000 |  |
Equity component of early extinguishment of 2023 convertible senior notes | (26,713,000) |  |  |  | $ 2,973,311 |  | (26,713,000) |  |
Proceeds from hedges related to 2023 convertible senior notes | 405,851,000 |  |  |  |  |  | 405,851,000 |  |
Payments for warrants related to 2023 convertible senior notes | (358,622,000) |  |  |  |  |  | (358,622,000) |  |
Purchases of hedges related to 2023 convertible senior notes | (74,094,000) |  |  |  |  |  | (74,094,000) |  |
Stock-based compensation | 127,846,000 |  |  |  |  |  | 127,846,000 |  |
Other comprehensive income | 1,211,000 |  |  |  |  |  |  | 1,211,000 |
Net loss | (208,913,000) |  |  |  | $ (192,138,000) | $ (16,775,000) |  |  |
Ending balance (in shares) at Jan. 31, 2020 |  |  |  |  | 113,990,069 | 8,647,779 |  |  |
Ending balance at Jan. 31, 2020 | $ 405,344,000 |  |  |  | $ 11,000 | $ 1,000 | $ 1,105,564,000 | $ 892,000 | $ (701,124,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Vesting of RSUs (in shares) | 12,359,302 |  |  |  |  |  |  |  |
[1] | Adjusted for adoption of ASC 842. See Note 2.
[2] | Adjusted for adoption of ASC 842. See Note 2.

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