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Stock-Based Compensation (Tables)

9 Months Ended

May 02, 2020

Share-based Payment Arrangement [Abstract]

Summary of Stock Option Activity Under 2011 and 2017 Stock Plan

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 – August 3, 2019												7,070,125						$	14.48					7.72						$	73,861
Granted												1,602,670						$	23.39
Exercised												(764,284)						$	8.09
Cancelled												(500,803)						$	22.33
Balance – May 2, 2020												7,407,708						$	16.79					7.59						$	21,095

Summary of Restricted Stock Units Award Activity

The following table summarizes the restricted stock unit (“RSU”) award activity under the 2017 Plan and 2019 Plan:

			Unvested RSUs
			Class A Common Stock						Weighted- Average Grant Date Fair Value
Unvested at August 3, 2019			4,428,845						$	27.30
Granted			7,032,993						$	17.01
Vested			(714,908)						$	25.14
Forfeited			(1,069,114)						$	24.49
Unvested at May 2, 2020			9,677,816						$	20.30

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 Ended																		For the Nine Months Ended
			May 2, 2020						April 27, 2019						May 2, 2020						April 27, 2019
Expected term (in years)			6.2 - 6.2						6.0 - 6.5						5.5 - 6.2						5.1 - 6.5
Volatility			50.1		%				52.2%						50.1% - 51.2%						41.7% - 52.2%
Risk free interest rate			1.4		%				2.6%						1.4% - 1.7%						2.6% - 3.0%
Dividend yield			—		%				—		%				—		%				—		%

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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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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.

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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.

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