Stock Options and Warrants (Tables)

6 Months Ended

Nov. 30, 2020

Stock Option and Warrant Activity

The following table represents stock option and warrant activity as of and for the six months ended November 30, 2020 (in thousands, except per share data):

	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life in Years		Aggregate Intrinsic Value
Options and warrants outstanding - May 31, 2020		131,361		$	0.65		5.79	$	302,961
Granted		5,486		$	3.61		—		—
Exercised		(59,238	)	$	0.57		—		—
Forfeited/expired/cancelled		(533	)	$	0.98		—		—
Options and warrants outstanding - November 30, 2020		77,076		$	0.88		4.38	$	143,788
Outstanding exercisable - November 30, 2020		70,747		$	0.71		3.97	$	140,630