Net Income (Loss) per Share

9 Months Ended

Sep. 30, 2016

5. Net Income (Loss) per Share

The following table sets forth the computation of basic and diluted net income (loss) per share for the three and nine months ended September 30 (in thousands, except per share amounts):


	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2016		2015		2016			2015
Numerator:
Net income (loss) attributable to Vicor Corporation	$	2,336	$	2,503	$	(3,559	)	$	6,679

Denominator:
Denominator for basic net income (loss) per share-weighted average shares (1)		38,837		38,786		38,811			38,742
Effect of dilutive securities:
Employee stock options (2)		347		300		—			434

Denominator for diluted net income (loss) per share – adjusted weighted-average shares and assumed conversions		39,184		39,086		38,811			39,176

Basic net income (loss) per share	$	0.06	$	0.06	$	(0.09	)	$	0.17

Diluted net income (loss) per share	$	0.06	$	0.06	$	(0.09	)	$	0.17

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

(2)

Options to purchase 449,464 and 1,845,289 shares of Common Stock for the three and nine months ended September 30, 2016, respectively, were not included in the calculation of net income (loss) per share as the effect would have been antidilutive. Options to purchase 533,689 and 141,971 shares of Common Stock for the three and nine months ended September 30, 2015, respectively, were not included in the calculation of net income per share as the effect would have been antidilutive.