Stock Options and Warrants (Tables)

9 Months Ended

Feb. 29, 2020

Stock Option and Warrant Activity

The following table represents stock option and warrant activity as of and for the nine months ended February 29, 2020:

	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life in Years		Aggregate Intrinsic Value
Options and warrants outstanding—May 31, 2019		178,591,849		$	0.71		3.75	$	896,400
Granted		56,818,838			0.46		—		—
Exercised		(59,546,851	)		0.39		—		—
Forfeited/expired/cancelled		(2,677,865	)		0.73		—		—
Options and warrants outstanding—February 29, 2020		173,185,971			0.65		3.94	$	69,328,476
Outstanding exercisable—February 29, 2020		169,122,723		$	0.66		3.77	$	67,192,113