4. EARNINGS PER SHARE

3 Months Ended

Aug. 31, 2020

Earnings Per Share [Abstract]

4. EARNINGS PER SHARE

4. EARNINGS PER SHARE

    Basic earnings per share is determined using the weighted average number of common shares outstanding during the period. Diluted earnings per share is determined using the weighted average number of common shares and potential common shares (representing the dilutive effect of stock options, restricted stock units (“RSUs”), and Amended and Restated 2006 Employee Stock Purchase Plan (“ESPP”) shares) outstanding during the period using the treasury stock method.

    The following table presents the computation of basic and diluted net income (loss) per share attributable to Aehr Test Systems common shareholders (in thousands, except per share data):

	Three Months Ended
	August 31,
	2020		2019
Numerator: Net income (loss)	$	107	$	(413	)
Denominator for basic net income (loss) per share:
Weighted average shares outstanding		23,248		22,708
Shares used in basic net income (loss) per share calculation		23,248		22,708
Effect of dilutive securities		207		—
Denominator for diluted net income (loss) per share		23,455		22,708
Basic net income (loss) per share	$	0.00	$	(0.02	)
Diluted net income (loss) per share	$	0.00	$	(0.02	)

    For the purpose of computing diluted earnings per share, the weighted average number of potential common shares does not include stock options with an exercise price greater than the average fair value of the Company’s common stock for the period, as the effect would be anti-dilutive. Stock options to purchase 2,594,000 shares of common stock were outstanding as of August 31, 2020, but were not included in the computation of diluted net income per share, because the inclusion of such shares would be anti-dilutive. In the three months ended August 31, 2019, potential common shares were not included in the calculation of diluted net loss per share as the effect would be anti-dilutive. As such, the numerator and the denominator used in computing both basic and diluted net loss per share for these periods are the same. Stock options to purchase 3,434,000 shares of common stock, RSUs for 20,000 shares and ESPP rights to purchase 297,000 ESPP shares were outstanding as of August 31, 2019, but were not included in the computation of diluted net loss per share because the inclusion of such shares would be anti-dilutive.