Robert Gendron - 26 May 2026 Form 4 Insider Report for VICOR CORP (vicr)

Reporting relationship: Corp. VP - Marketing
Issuer ticker: vicr
Reported as of: 26 May 2026
Net transaction value: -$1,508,430
SEC form: 4
Accepted by SEC: 27 May 2026, 17:30:50 UTC
Prior SEC filing: 06 May 2026
Source filing: View source filing
Reporting owner signature: /s/Quentin A. Fendelet Attorney in fact for Robert Gendron

Key filing fact

Robert Gendron filed Form 4 for VICOR CORP (vicr) on 27 May 2026.

Key facts

This page summarizes Robert Gendron's Form 4 filing for VICOR CORP (vicr).
18 reported transactions and 6 derivative rows are listed below.
Accepted by SEC: 27 May 2026, 17:30.

Change

Previous filing in this sequence was filed on 06 May 2026.
Current net transaction value: -$1,508,430.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001654669 Primary reporting owner

GENDRON ROBERT

Relationship: Corp. VP - Marketing
Address: 25 FRONTAGE RD., ANDOVER
Signature: /s/Quentin A. Fendelet Attorney in fact for Robert Gendron
Signature date: 27 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

vicr transaction

Common Stock

Options Exercise

Transaction value
Shares: +577
Change %
Price: $60.61^*
Shares after: 577
Date: 26 May 2026
Ownership: Direct

vicr transaction

Common Stock

Sale

Transaction value: $190,410
Shares: -577
Change %: -100%
Price: $330.00
Shares after: 0
Date: 26 May 2026
Ownership: Direct

vicr transaction

Common Stock

Options Exercise

Transaction value
Shares: +794
Change %
Price: $41.61^*
Shares after: 794
Date: 26 May 2026
Ownership: Direct

vicr transaction

Common Stock

Sale

Transaction value: $262,020
Shares: -794
Change %: -100%
Price: $330.00
Shares after: 0
Date: 26 May 2026
Ownership: Direct

vicr transaction

Common Stock

Options Exercise

Transaction value
Shares: +480
Change %
Price: $75.43^*
Shares after: 480
Date: 26 May 2026
Ownership: Direct

vicr transaction

Common Stock

Sale

Transaction value: $158,400
Shares: -480
Change %: -100%
Price: $330.00
Shares after: 0
Date: 26 May 2026
Ownership: Direct

vicr transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,184
Change %
Price: $33.96^*
Shares after: 1,184
Date: 26 May 2026
Ownership: Direct

vicr transaction

Common Stock

Sale

Transaction value: $390,720
Shares: -1,184
Change %: -100%
Price: $330.00
Shares after: 0
Date: 26 May 2026
Ownership: Direct

vicr transaction

Common Stock

Options Exercise

Transaction value
Shares: +817
Change %
Price: $32.97^*
Shares after: 817
Date: 26 May 2026
Ownership: Direct

vicr transaction

Common Stock

Sale

Transaction value: $269,610
Shares: -817
Change %: -100%
Price: $330.00
Shares after: 0
Date: 26 May 2026
Ownership: Direct

vicr transaction

Common Stock

Options Exercise

Transaction value
Shares: +719
Change %
Price: $50.00^*
Shares after: 719
Date: 26 May 2026
Ownership: Direct

vicr transaction

Common Stock

Sale

Transaction value: $237,270
Shares: -719
Change %: -100%
Price: $330.00
Shares after: 0
Date: 26 May 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

vicr transaction Derivative

Non Qualified Stock Option

Options Exercise

Transaction value
Shares: -577
Change %: -50%
Price: $0.000000^*
Shares after: 577
Date: 26 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 577
Exercise price: $60.61
Footnotes: F1

vicr transaction Derivative

Non Qualified Stock Option

Options Exercise

Transaction value
Shares: -794
Change %: -33%
Price: $0.000000^*
Shares after: 1,588
Date: 26 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 794
Exercise price: $41.61
Footnotes: F1

vicr transaction Derivative

Non Qualified Stock Option

Options Exercise

Transaction value
Shares: -480
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 26 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 480
Exercise price: $75.43
Footnotes: F1

vicr transaction Derivative

Non Qualified Stock Option

Options Exercise

Transaction value
Shares: -1,184
Change %: -25%
Price: $0.000000^*
Shares after: 3,550
Date: 26 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,184
Exercise price: $33.96
Footnotes: F1

vicr transaction Derivative

Non Qualified Stock Option

Options Exercise

Transaction value
Shares: -817
Change %: -25%
Price: $0.000000^*
Shares after: 2,448
Date: 26 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 817
Exercise price: $32.97
Footnotes: F1

vicr transaction Derivative

Non Qualified Stock Option

Options Exercise

Transaction value
Shares: -719
Change %: -20%
Price: $0.000000^*
Shares after: 2,873
Date: 26 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 719
Exercise price: $50.00
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Options expire 2 years from each vesting date.