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Share-Based Compensation Plans (Tables)

12 Months Ended

Apr. 30, 2021

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

		Twelve months ended April 30,
		2021				2020
Risk-free interest rate			0.6	%			1.7	%
Expected dividend yield			0.0	%			0.0	%
Expected life (in years)			5.5 - 5.8				5.5 - 5.8
Expected volatility			136.5	%			127.6% - 128.2	%

Schedule of Stock Option Activity

										Weighted
										Average
						Weighted				Remaining
		Shares				Average				Contractual
		Underlying				Exercise				Term
		Options				Price				(In Years)
Outstanding as of April 30, 2020			474,128			$	3.56				9.4
Granted			248,876			$	2.93
Exercised			(175,500	)		$	1.05
Cancelled/forfeited			(30,677	)		$	7.31
Outstanding as of April 30, 2021			516,827			$	3.89				9.0
Exercisable as of April 30, 2021			248,252			$	5.07				8.3

Schedule of Non-vested Restricted Stock Activity

A summary of unvested restricted stock under our stock incentive plans is as follows:

						Weighted
		Number				Average Price per
		of Shares				Share
Issued and unvested at April 30, 2020			13,513			$	1.48
Granted			10,000			$	2.93
Vested			(13,513	)		$	1.48
Cancelled/forfeited			-			$	-
Issued and unvested at April 30, 2021			10,000			$	2.93

Performance Stock Options [Member]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The Company determined these awards contain a market- based condition and estimated the fair value using the Monte Carlo simulation model with the following assumptions:

		Twelve months ended April 30,
		2021				2020
Risk-free interest rate			1.2	%			2.3	%
Expected dividend yield			0.0	%			0.0	%
Expected life (in years)			10.0				10.0
Expected volatility			76.0%- 136.5	%			115.0	%

Schedule of Stock Option Activity

A summary of performance stock options under our stock incentive plans is detailed in the following table.

										Weighted
										Average
						Weighted				Remaining
		Shares				Average				Contractual
		Underlying				Exercise				Term
		Options				Price				(In Years)
Outstanding as of April 30, 2020			81,347			$	1.05				9.7
Granted			344,723			$	2.93
Exercised			-			$	-
Cancelled/forfeited			(1,280	)		$	2.90
Outstanding as of April 30, 2021			424,790			$	2.57				9.5
Exercisable as of April 30, 2021			40,668			$	1.05				8.7

X

- Definition

Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value.

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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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