Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2025

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

VICOR CORPORATION

SCHEDULE II

VALUATION AND QUALIFYING ACCOUNTS

Years ended December 31, 2025, 2024 and 2023

			Charge
			(Recovery)
	Balance at		to Costs and		Other Charges,		Balance at
Description	Beginning of Period		Expenses		Deductions (1)		End of Period
Allowance for doubtful accounts:
Year ended:
December 31, 2025	$	130,000	$	7,000	$	—	$	137,000
December 31, 2024		130,000		—		—		130,000
December 31, 2023		87,000		43,000		—		130,000

(1)Reflects uncollectible accounts written off, net of recoveries.