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Equity (Tables)

6 Months Ended

Jan. 31, 2022

Stockholders' Equity Note [Abstract]

Schedule of stock option activity

		Number of Options				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (in years)				Aggregate Intrinsic Value (in thousands)
Outstanding at July 31, 2021			683,414			$	11.13				3.05			$	26,982
Granted			518,304				13.93
Cancelled / Forfeited			(174,941	)			—
Outstanding at January 31, 2022			1,026,777			$	12.07				2.68			$	—
Exercisable at January 31, 2022			565,005			$	4.90				1.15			$	—

Schedule of Black-Scholes option pricing model

Risk-free interest rate			0.67% - 1.7%
Expected term (in years)			6.04 - 6.11
Expected volatility			75% - 93%
Expected dividend yield			—%

Schedule of grants of restricted shares of Class B common stock

		Number of Non-vested Shares				Weighted Average Grant Date Fair Value
Outstanding at July 31, 2021			1,007,975			$	46.77
Granted			91,268				12.76
Vested			(77,474	)			16.03
Cancelled / Forfeited			(942,169	)			(48.51	)
Non-vested shares at January 31, 2022			79,600			$	23.68

Schedule of general and administrative expense

		Three months ended January 31,								Six months ended January 31,
		2022				2021				2022				2021
		(unaudited, in thousands)								(unaudited, in thousands)
General and administrative		$	7,756			$	400			$	15,419			$	507
Research and development			274				105				464				212
Forfeiture of RSUs within general and administrative			(18,978	)			—				(18,978	)			—
Net stock-based compensation expense		$	(10,948	)		$	505			$	(3,095	)		$	719

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- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value.

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