8. NET LOSS PER COMMON SHARE (Tables)

9 Months Ended

Jan. 31, 2019

Earnings Per Share [Abstract]

Schedule of antidilutive shares

The calculation of weighted average diluted shares outstanding for the three and nine months ended January 31, 2019 and 2018 excludes the dilutive effect of the following weighted average outstanding stock options, unvested RSUs and shares of common stock expected to be issued under our ESPP as their impact is anti-dilutive during periods of net loss:

	Three Months Ended January 31,				Nine Months Ended January 31,
	2019		2018		2019		2018
Stock Options		116,962		115,425		160,937		78,427
RSUs		38,466		–		33,606		–
ESPP		86		1,202		9,773		466
Total		155,514		116,627		204,316		78,893

The calculation of weighted average diluted shares outstanding for the three and nine months ended January 31, 2019 and 2018 also excludes the following weighted average outstanding stock options, unvested RSUs, warrants, and Series E Preferred Stock (assuming the if-converted method), as their exercise prices or conversion price were greater than the average market price of our common stock during the respective periods, resulting in an anti-dilutive effect:

	Three Months Ended January 31,				Nine Months Ended January 31,
	2019		2018		2019		2018
Stock Options		2,779,142		3,214,694		2,659,632		3,663,102
RSUs		47,482		–		15,827		–
Warrants		–		39,040		17,115		39,040
Series E Preferred Stock		1,978,783		1,978,783		1,978,783		1,978,783
Total		4,805,407		5,232,517		4,671,357		5,680,925