Net Income (Loss) Per Share

12 Months Ended

Jun. 30, 2020

Net Income (loss) Per Common Share Attributable to Alpha and Omega Semiconductor Limited

Basic net income (loss) per share is computed using the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share is computed using the weighted-average number of common shares outstanding, plus potential shares of common stock during the period. Potential shares of common stock include dilutive shares attributable to the assumed exercise of share options, ESPP shares and vesting of RSUs using the treasury stock method and contingent issuances of common shares related to convertible preferred shares, if dilutive. Under the treasury stock method, potential common shares outstanding are not included in the computation of diluted net income per share if their effect is anti-dilutive.

The following table presents the calculation of basic and diluted net income per share attributable to common shareholders:



	Year Ended June 30,
	2020			2019		2018
	(in thousands, except per share data)
Numerator:
Net income (loss) attributable to Alpha and Omega Semiconductor Limited	$	(6,596	)	$	1,861	$	14,263

Denominator:
Basic:
Weighted average number of common shares used to compute basic net income per share	24,840			24,063		23,901

Diluted:
Weighted average number of common shares used to compute basic net income per share	24,840			24,063		23,901
Effect of potentially dilutive securities:
Stock options, RSUs and ESPP shares	—			635		943
Weighted average number of common shares used to compute diluted net income per share	24,840			24,698		24,844

Net income (loss) per share attributable to Alpha and Omega Semiconductor Limited:
Basic	$	(0.27	)	$	0.08	$	0.60
Diluted	$	(0.27	)	$	0.08	$	0.57

The following potential dilutive securities were excluded from the computation of diluted net income per share as their effect would have been anti-dilutive:



	Year Ended June 30,
	2020	2019	2018
	(in thousands)
Employee stock options and RSUs	2,028	593	186
ESPP	834	512	182
Total potential dilutive securities	2,862	1,105	368