Stock-Based Compensation

3 Months Ended

Mar. 31, 2022

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation

6. Stock-Based Compensation

The Company uses the Black-Scholes option pricing model to calculate the fair value of stock option awards, whether they possess time-based vesting provisions or performance-based vesting provisions, and awards granted under the Vicor Corporation 2017 Employee Stock Purchase Plan (“ESPP”), as of their grant date. Stock-based compensation expense was as follows (in thousands):

	Three Months Ended
	March 31,
	2022		2021
Cost of revenues	$	251	$	228
Selling, general and administrative		1,207		853
Research and development		536		490
Total stock-based compensation	$	1,994	$	1,571

Compensation expense by type of award was as follows (in thousands):

	Three Months Ended
	March 31,
	2022		2021
Stock options	$	1,759	$	1,331
ESPP		235		240
Total stock-based compensation	$	1,994	$	1,571