Net Income (Loss) per Share

3 Months Ended

Mar. 31, 2018

7. Net Income (Loss) per Share

The following table sets forth the computation of basic and diluted net income (loss) per share for the three months ended March 31 (in thousands, except per share amounts):


	2018		2017
Numerator:
Net income (loss) attributable to Vicor Corporation	$	3,943	$	(974	)

Denominator:
Denominator for basic net income (loss) per share-weighted average shares (1)		39,479		39,070
Effect of dilutive securities:
Employee stock options (2)		688		—

Denominator for diluted net income (loss) per share – adjusted weighted-average shares and assumed conversions		40,167		39,070

Basic net income (loss) per share	$	0.10	$	(0.02	)

Diluted net income (loss) per share	$	0.10	$	(0.02	)

(1)	Denominator represents weighted average number of shares of Common Stock and Class B Common Stock outstanding.

(2)	Options to purchase 82,241 and 1,621,001 shares of Common Stock for the three months ended March 31, 2018 and 2017, respectively, were not included in the calculation of net income (loss) per share as the effect would have been antidilutive.