Patrizio Vinciarelli - May 2, 2023 Form 4 Insider Report for VICOR CORP (VICR)

Role: Chairman and CEO, Director, 10%+ Owner
Signature: /s/Quentin A. Fendelet. Attorney in fact for Patrizio Vinciarelli
Stock symbol: VICR
Transactions as of: May 2, 2023
Transactions value $: $0
Form type: 4
Date filed: 5/3/2023, 12:29 PM
Previous filing: Apr 26, 2022
Next filing: May 6, 2024

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	VICR	Common Stock						171K	May 2, 2023	See footnote	F1
holding	VICR	Common Stock						9.42M	May 2, 2023	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	VICR	Non Qualified Stock Option	Award	$0	+17.3K		$0.00	17.3K	May 2, 2023	Common Stock	17.3K	$41.61	Direct	F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These shares are held by the Reporting Person as Trustee of the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012, established for the benefit of the child of the Reporting Person.
F2	Granted under the Company's Amended and Restated 2000 Stock Option and Incentive Plan on May 2, 2023 and vest over a five year period.
F3	Options expire 2 years from each vesting date.