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STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Sep. 30, 2022

STOCK-BASED COMPENSATION

Schedule of share-based compensation stock options activity


		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche
		11		12		13		14		15		16		17		18		19		20		21		22		23
		January 4,		April 19,		May 16,		August 3,		January 3,		October 2,		December 22,		January 2,		March 1,		January 2,		January 2,		April 14,		January 3,
Grant date		2016		2016		2016		2016		2017		2017		2017		2018		2018		2019		2020		2021		2022

Outstanding as of September 30, 2019		13,500		60,000		20,000		20,000		18,000		2,500		8,800		29,000		20,000		36,000		38,000		—		—

Number of options granted		—		—		—		—		—		—		—		—		—		—		—		—		—
Options exercised		—		—		—		—		—		—		—		—		—		—		—		—		—
Options cancelled/expired		—		—		—		—		—		—		—		—		—		—		—		—		—
Outstanding as of September 30, 2020		13,500		60,000		20,000		20,000		18,000		2,500		8,800		29,000		20,000		36,000		38,000		—		—

Number of options granted		—		—		—		—		—		—		—		—		—		—		—		160,000		—
Options exercised		—		—		—		—		—		—		(1,000)		—		—		—		—		(20,930)		—
Options cancelled/expired		—		(60,000)		(20,000)		(20,000)		—		(2,500)		(6,000)		(10,000)		—		—		—		—		—
Outstanding as of September 30, 2021		13,500		—		—		—		18,000		—		1,800		19,000		—		—		—		139,070		—

Number of options granted		(1,000)																								40,000
Options exercised		(1,000)								(4,000)				(1,000)										(15,510)
Options cancelled/expired		(1,000)								(4,000)				(800)
Outstanding as of September 30, 2022		12,500		—		—		—		4,000		—		—		19,000		—		—		—		123,560		—
Options vested and exercisable
At September 30, 2021		13,500		—		—		—		18,000		—		1,800		19,000		—		—		—		139,070		—
At September 30, 2022		12,500		—		—		—		14,000		—		—		19,000		—		—		—		123,560		40,000
Weighted average fair value at the grant date (US$)		9.0		15.4		12.4		14.4		4.0		7.7		4.4		5.1		5.1		4.0		2.5		12.5		5.4

Schedule of share-based payment award stock options valuation assumptions


		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche		Tranche
		11		12		13		14		15		16		17		18		19		20		21		22		23
Exercise price (US$)		13.8		20.5		16.5		20		20.7		16.5		8		9.1		8.2		5.19		5.3		15.85		7.23
Average risk-free interest rate		1.73	%	1.79	%	1.75	%	1.55	%	1.94	%	1.94	%	2.26	%	2.25	%	2.58	%	2.49	%	1.67	%	0.87	%	1.37	%
Expected option life (year)		5		10		10		10		5		5		5		5		5		5		5		5		5
Volatility rate		80.72	%	69.27	%	69.92	%	65.37	%	63.87	%	52.40	%	63.20	%	64.60	%	68.20	%	103	%	52.60	%	109.90	%	100.95	%
Dividend yield		—		—		—		—		—		—		—		—		—		—		—		—		—