Stock-Based Compensation (Tables)

3 Months Ended

Dec. 31, 2024

Share-based Compensation

Schedule of stock-based compensation expense

	Three months ended December 31,
	2024		2023
Research and development	$	110,029	$	231,416
General and administrative		3,562,391		1,041,195
	$	3,672,420	$	1,272,611

Employee Stock Option

Share-based Compensation

Schedule of stock option activity

				Weighted
				Average
		Weighted		Remaining
	Number of	Average		Contractual	Aggregate
	Shares	Exercise Price		Term (Years)	Intrinsic Value
Balance at October 1, 2024	1,946,646	$	19.51
Granted	1,179,276		5.22
Forfeited	(304,636)		10.25
Expired	(4,435)		46.78
Balance at December 31, 2024	2,816,851	$	14.49	8.2	$	—
Vested and exercisable at December 31, 2024	1,375,258	$	22.83	6.7	$	—

Schedule of option assumptions

	Three months ended December 31,
	2024		2023
Risk-free interest rate	3.5	%	4.6	%
Expected term (years)	5.5		5.5
Expected volatility	134.0	%	130.6	%
Expected dividend yield	—		—

Performance-based stock options

Share-based Compensation

Schedule of stock option activity

				Weighted
				Average
		Weighted		Remaining
	Number of	Average		Contractual	Aggregate
	Shares	Exercise Price		Term (Years)	Intrinsic Value
Balance at October 1, 2024	666,500	$	7.94
Granted	—		—
Forfeited	(476,500)		6.78
Balance at December 31, 2024	190,000	$	10.85	8.6	$	—
Vested and exercisable at December 31, 2024	35,000	$	28.80	6.1	$	—