Equity Awards and Warrants (Tables)

12 Months Ended

May 31, 2021

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Option and Warrant Activity

The following table represents stock option and warrant activity for the years ended May 31, 2020 and May 31, 2021:

				Weighted
				average
		Weighted		remaining	Aggregate
	Number of	average		contractual	intrinsic
	shares	exercise price		life in years	value
Options and warrants outstanding May 31, 2019	178,592	$	0.71	3.66	$	896
Granted	57,720	$	0.47	—		—
Exercised	(101,853)	$	0.56	—		—
Forfeited, expired, and cancelled	(3,099)	$	0.74	—		—
Options and warrants outstanding May 31, 2020	131,360	$	0.65	5.79	$	302,961
Granted	7,036	$	3.82	—		—
Exercised	(75,735)	$	0.59	—		—
Forfeited, expired, and cancelled	(1,088)	$	1.66	—		—
Options and warrants outstanding May 31, 2021	61,573	$	0.95	4.40	$	68,756
Outstanding exercisable May 31, 2021	55,713	$	0.78	3.98	$	67,151