Net Income (Loss) per Share

9 Months Ended

Sep. 30, 2025

10. Net Income (Loss) per Share

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


	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2025		2024		2025		2024

Numerator:
Net income (loss) attributable to Vicor Corporation	$	28,292	$	11,552	$	72,023	$	(4,117	)
Denominator:
Denominator for basic net income (loss) per share – weighted average shares (1)		44,734		45,117		44,986		44,829
Effect of dilutive securities:
Employee stock options (2)		196		57		181		—
Denominator for diluted net income (loss) per share – adjusted weighted-average shares and assumed conversions		44,930		45,174		45,167		44,829

Basic net income (loss) per share	$	0.63	$	0.26	$	1.60	$	(0.09	)
Diluted net income (loss) per share	$	0.63	$	0.26	$	1.59	$	(0.09	)

(1)

Denominator represents the weighted average number of shares of Common Stock and Class B Common Stock outstanding.

(2)

Options to purchase 1,733,948 and 1,500,723 shares of Common Stock for the three and nine months ended September 30, 2025, respectively, were not included in the calculation of net income per share as the effect would have been antidilutive. Options to purchase 2,875,975 and 2,971,033 shares of Common Stock for each of the three and nine months ended September 30, 2024, respectively, were not included in the calculation of net income (loss) per share as the effect would have been antidilutive.