VICOR CORP — Director's Dealing 2025

May 5, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: VICOR CORP (vicr)
CIK: 0000751978
Period of Report: 2025-05-02

Reporting Person: VINCIARELLI PATRIZIO (Director, Chairman and CEO, 10% Owner)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-05-02	Non Qualified Stock Option	$50	A	8915	Acquired		Common Stock (8915)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	171125	Indirect
Common Stock	9850263	Direct

Footnotes

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 Companys Amended and Restated 2000 Stock Option and Incentive Plan on May 2, 2025 and vest over a five year period.

F3: Options expire 2 years from each vesting date.