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Stock-Based Compensation (Tables) | 6 Months Ended
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Oct. 31, 2021
Share-based Payment Arrangement [Abstract] |
Summary of Stock Option Activity | A summary of the Company’s option activity during the six months ended October 31, 2021 is as follows:
| Options Outstanding
| Number of Stock Options Outstanding |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (years) |  | Aggregate Intrinsic Value
| (in thousands) |  |  |  |  |  | (in thousands)
Balance as of April 30, 2021 | 38,487 |  |  | $ | 6.39 |  |  | 7.98 |  | $ | 2,304,714 |
Options granted | 3,412 |  |  | 55.82 |  |  |  |  |
Options exercised | (2,735) |  |  | 4.22 |  |  |  |  |
Options cancelled | (1,960) |  |  | 10.48 |  |  |  |  |
Balance as of October 31, 2021 | 37,204 |  |  | $ | 10.86 |  |  | 7.60 |  | $ | 1,274,594 |
Vested and exercisable as of October 31, 2021 | 14,843 |  |  | $ | 4.48 |  |  | 6.43 |  | $ | 603,201 |
Vested and expected to vest as of October 31, 2021(1) | 37,825 |  |  | $ | 10.86 |  |  | 7.60 |  | $ | 1,295,871 |
(1) The number of options vested and expected to vest as of October 31, 2021 includes early exercised, unvested Class A common stock. Refer to Note 8. Stockholders’ Equit y for more information.
Schedule of Valuation Assumptions | The weighted average assumptions underlying the fair value estimation are provided in the following table:
|  | Six Months Ended October 31,
|  | 2021 |  | 2020
Valuation assumptions: |  |  |  |
Expected dividend yield |  | — | % |  | — | %
Expected volatility |  | 43.9 | % |  | 43.7 | %
Expected term (years) |  | 6.5 |  | 6.3
Risk-free interest rate |  | 1.0 | % |  | 0.4 | %
Schedule of Restricted Stock Unit Activity | A summary of the Company’s RSU activity during the six months ended October 31, 2021 is as follows:
| RSUs Outstanding
| Number of RSUs |  | Weighted Average Grant Date Fair Value Per Share
| (in thousands) |  |
Unvested Balance as of April 30, 2021 | 447 |  |  | $ | 74.52 |
RSUs granted | 6,080 |  |  | 54.32 |
RSUs vested | (37) |  |  | 70.07 |
RSUs forfeited | (448) |  |  | 58.15 |
Unvested Balance as of October 31, 2021 | 6,042 |  |  | $ | 55.43 |
Summary of Effects of Stock-Based Compensation | The following table summarizes the effects of stock-based compensation on the Company’s condensed consolidated statements of operations (in thousands):
| Three Months Ended October 31, |  | Six Months Ended October 31,
| 2021 |  | 2020 |  | 2021 |  | 2020
Cost of subscription | $ | 2,364 |  |  | $ | 159 |  |  | $ | 3,185 |  |  | $ | 343 |
Cost of professional services | 685 |  |  | 89 |  |  | 1,287 |  |  | 137 |
Sales and marketing | 13,555 |  |  | 2,190 |  |  | 19,690 |  |  | 3,045 |
Research and development | 10,256 |  |  | 648 |  |  | 13,014 |  |  | 1,106 |
General and administrative | 5,680 |  |  | 2,115 |  |  | 9,276 |  |  | 3,050 |
Total stock-based compensation expense | $ | 32,540 |  |  | $ | 5,201 |  |  | $ | 46,452 |  |  | $ | 7,681 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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