XML 32 R23.htm IDEA: XBRL DOCUMENT v3.22.1
Stock-Based Compensation (Tables)
 9 Months Ended
Apr. 30, 2022
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 31, 2021
3,650,482 $25.47 7.40$106,490 
Granted1,201,877 14.54 
Exercised(171,996)8.95 
Cancelled(279,869)32.62 
Balance – April 30, 2022
4,400,494 $22.67 7.52$1,501 
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 StockWeighted-
Average
Grant Date
Fair Value
Unvested at July 31, 2021
10,264,925 $31.35 
Granted13,186,611 16.34 
Vested(2,344,882)27.57 
Forfeited(4,227,978)29.03 
Unvested at April 30, 2022
16,878,676 $20.73 
Summary of Assumptions Used in Black-Scholes Option-Pricing Model to Determine 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 EndedFor the Nine Months Ended
 April 30, 2022May 1, 2021April 30, 2022May 1, 2021
Expected term (in years)
3.1 - 3.7
5.8
3.1 - 5.5
5.3 - 6.3
Volatility
67.0%
55.5%
62.1% - 67.0%
55.5% - 55.9%
Risk free interest rate
1.4% - 1.5%
0.6%
0.8% -1.5%
0.3% - 0.6%
Dividend yield— %— %— %— %