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Net Income per Share

9 Months Ended

Sep. 30, 2019

11.	Net Income per Share

The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share amounts):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Numerator:
Net income attributable to Vicor Corporation	$	5,937	$	13,012	$	12,786	$	24,815

Denominator:
Denominator for basic net income per share-weighted average shares (1)		40,332		40,120		40,279		39,769
Effect of dilutive securities:
Employee stock options (2)		1,862		1,004		1,156		876

Denominator for diluted net income per share – adjusted weighted-average shares and assumed conversions		42,194		41,124		41,435		40,645

Basic net income per share	$	0.15	$	0.32	$	0.32	$	0.62

Diluted net income per share	$	0.14	$	0.32	$	0.31	$	0.61

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

(2)

Options to purchase

171,499

and

138,251

shares of Common Stock for the three and nine months ended September 30, 2019, respectively, and

54,818

and

47,573

shares of Common Stock for the three and nine months ended September 30, 2018, respectively, were not included in the calculation

of net income per share as the effect would have been antidilutive.