Stock-Based Compensation (Tables)

9 Months Ended

Jun. 30, 2022

Share-Based Payment Arrangement [Abstract]

Summarized Information about Stock Options

The following table summarizes information about stock options:

	Number of Options Outstanding	Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term	Aggregate Intrinsic Value
Balance at September 30, 2021	3,456,239	$	19.60
Granted	—	—
Cancelled	(106,801)	43.68
Exercised	(506,596)	8.45
Balance at June 30, 2022	2,842,842	$	20.60	5.1 years	$	55,434,252
Exercisable at June 30, 2022	2,370,089	$	16.14	4.6 years	$	52,941,990

Assumptions Used to Value Stock Options

The assumptions used to value stock options are as follows:

	Nine Months Ended June 30,
	2022	2021
Dividend yield	N/A	—
Risk-free interest rate	N/A	0.4% - 1.1%
Volatility	N/A	86% - 90.4%
Expected life (in years)	N/A	6.25
Weighted average grant date fair value per share of options granted	N/A	$	48.64

Summary of Share Activity Related to RSUs

The following table summarizes the activity of the Company’s RSUs:

	Number of RSUs	Weighted- Average Grant Date Fair Value Per Share
Unvested at September 30, 2021	3,831,850	$	61.24
Granted	1,691,367	56.73
Vested	(962,188)	49.10
Forfeited	(95,625)	69.32
Unvested at June 30, 2022	4,465,404	$	61.97