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Stock-Based Compensation (Tables) | 6 Months Ended
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Jan. 28, 2023
Share-Based Payment Arrangement [Abstract] |
Summary of Stock Option Activity | Stock option activity under the 2011 Plan, 2017 Plan, and 2019 Plan is as follows:
|  |  |  | Options Outstanding
|  |  |  | Number of Options |  | Weighted- Average Exercise Price |  | Weighted- Average Remaining Contractual Life (in Years) |  | Aggregate Intrinsic Value (in thousands)
Balance – July 30, 2022 |  |  |  | 4,703,564 |  |  | $ | 21.07 |  |  | 7.58 |  | $ | 638 |
Granted |  |  |  | 1,486,774 |  |  | 3.79 |  |  |  |  |
Exercised |  |  |  | (117,607) |  |  | 1.31 |  |  |  |  |
Cancelled |  |  |  | (871,361) |  |  | 26.93 |  |  |  |  |
Balance – January 28, 2023 |  |  |  | 5,201,370 |  |  | $ | 15.59 |  |  | 7.84 |  | $ | 1,738 |
Schedule of Unvested Restricted Stock Units Activity | The following table summarizes the RSU award activity under the 2017 Plan and 2019 Plan:
| Unvested RSUs |  |  |  |
| Class A Common Stock |  | Weighted- Average Grant Date Fair Value |  |  |  |
Unvested at July 30, 2022 | 19,217,622 |  |  | $ | 16.09 |  |  |  |  |
Granted | 3,038,609 |  |  | 4.00 |  |  |  |  |
Vested | (3,099,038) |  |  | 14.25 |  |  |  |  |
Forfeited | (5,411,847) |  |  | 15.36 |  |  |  |  |
Unvested at January 28, 2023 | 13,745,346 |  |  | $ | 14.12 |  |  |  |  |
Summary of Black - Scholes Option - Pricing Model Assumptions Used in Estimating Fair Value of Stock Options | The fair value of stock options granted to employees was estimated at the grant date using the Black-Scholes option-pricing model with the following assumptions:
| For the Three Months Ended |  | For the Six Months Ended
| January 28, 2023 |  | January 29, 2022 |  | January 28, 2023 |  | January 29, 2022
Expected term (in years) | 3.2 - 5.5 |  | 3.2 - 5.5 |  | 3.2 - 5.5 |  | 3.2 - 5.5
Volatility | 87.3% |  | 62.1% |  | 87.3% |  | 62.1%
Risk free interest rate | 4.2% - 4.4% |  | 0.8% - 1.3% |  | 4.2% -4.4% |  | 0.8% - 1.3%
Dividend yield | — | % |  | — | % |  | — | % |  | — | %

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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 https://asc.fasb.org/extlink&oid=128089324&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 https://asc.fasb.org/extlink&oid=128089324&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 https://asc.fasb.org/extlink&oid=128089324&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 https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the change in restricted stock units (RSUs). + References No definition available. + Details
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