Stockholders' Equity and Equity Incentive Plans (Tables)
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12 Months Ended |
Jan. 31, 2026 |
| Equity [Abstract] |
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| Schedule of Stock by Class Reserved for Future Issuance |
We have the following shares of Class A common stock reserved for future issuance: | | | | | | | | | | | | | | | | | | As of January 31, | | | | 2026 | | 2025 | | Stock options outstanding | | 1,542,753 | | | 2,394,918 | | | RSUs outstanding | | 20,106,305 | | | 23,870,513 | | | ESPP purchase rights outstanding | | 1,293,529 | | | 2,311,567 | | | Remaining shares available for future issuance under the 2011 and 2019 plan | | 66,954,929 | | | 56,022,675 | | | Remaining shares available for future issuance under the ESPP | | 20,664,260 | | | 18,807,595 | | | Total shares of Class A common stock reserved | | 110,561,776 | | | 103,407,268 | |
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| Schedule of Stock Option Activity Under Equity Incentive Plan |
A summary of stock option activity under our equity incentive plan and related information is as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Stock Options | | | | Outstanding Stock Options | | Weighted- Average Exercise Price | | Weighted- Average Remaining Contractual Life (Years) | | Aggregate Intrinsic Value | | | | | | | | | | | | | (in thousands, except share, life and per share data) | | Outstanding as of January 31, 2025 | | 2,394,918 | | | $ | 9.02 | | | 2.6 | | $ | 187,284 | | | | | | | | | | | | Exercised | | (842,567) | | | $ | 2.95 | | | | | $ | 66,978 | | | Canceled/forfeited/expired | | (9,598) | | | $ | 94.87 | | | | | | | Outstanding and Exercisable as of January 31, 2026 | | 1,542,753 | | | $ | 11.81 | | | 2.2 | | $ | 124,080 | | | | | | | | | | | | | | | | | | | |
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| Schedule of Restricted Stock Units (RSUs) Activity Under Equity Incentive Plan |
A summary of RSU activity under our equity incentive plan and related information is as follows: | | | | | | | | | | | | | RSUs | | Unvested RSUs | | Weighted-Average Grant Date Fair Value Per Share | | Unvested as of January 31, 2025 | 23,870,513 | | | $ | 73.48 | | | Granted | 10,695,967 | | | $ | 80.21 | | | | | | | Vested | (11,309,015) | | | $ | 76.45 | | | Forfeited | (3,151,160) | | | $ | 72.94 | | | Unvested as of January 31, 2026 | 20,106,305 | | | $ | 75.51 | |
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| Schedule of Assumptions for Estimating Fair Value of ESPP Purchase Rights |
We estimated the fair value of ESPP purchase rights using a Black-Scholes option-pricing model with the following assumptions: | | | | | | | | | | | | | | | | | | | Year Ended January 31, | | 2026 | | 2025 | | 2024 | | Expected term (years) | 0.5 - 2.0 | | 0.5 - 2.0 | | 0.5 - 2.0 | | Expected volatility | 31.2% - 33.0% | | 28.4% - 43.3% | | 30.0% - 57.6% | | Risk-free interest rate | 3.5% - 4.3% | | 4.2% - 5.4% | | 4.6% - 5.4% | | Expected dividend yield | — | | — | | — |
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| Schedule of Stock-based Compensation Expense |
The stock-based compensation expense by line item in the accompanying consolidated statements of operations is summarized as follows: | | | | | | | | | | | | | | | | | | | | | | | | | Year Ended January 31, | | | | | | 2026 | | 2025 | | 2024 | | | | | | | | | | | | | | | | (in thousands) | | Cost of revenue | | | | | $ | 96,273 | | | $ | 124,561 | | | $ | 143,798 | | | Research and development | | | | | 287,172 | | | 333,767 | | | 336,309 | | | Sales and marketing | | | | | 254,976 | | | 319,631 | | | 381,298 | | | General and administrative | | | | | 122,355 | | | 153,350 | | | 195,756 | | | Total stock-based compensation expense | | | | | 760,776 | | | 931,309 | | | 1,057,161 | | | Benefit from income taxes | | | | | (143,661) | | | (176,463) | | | (197,068) | | | Total stock-based compensation expense recorded to net income | | | | | $ | 617,115 | | | $ | 754,846 | | | $ | 860,093 | |
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