Philip D. Davies - 03 Aug 2026 Form 4 Insider Report for VICOR CORP (VICR)

Reporting relationship: Corp. VP-Global Sales & Mktg., Director
Issuer ticker: VICR
Reported as of: 03 Aug 2026
Net transaction value: -$650,308
SEC form: 4
Accepted by SEC: 05 Aug 2026, 11:13:51 UTC
Prior SEC filing: 06 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/Quentin A. Fendelet Attorney in Fact for Philip D. Davies

Key filing fact

Philip D. Davies filed Form 4 for VICOR CORP (VICR) on 05 Aug 2026.

Key facts

This page summarizes Philip D. Davies's Form 4 filing for VICOR CORP (VICR).
11 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 05 Aug 2026, 11:13.

Change

Previous filing in this sequence was filed on 06 Jul 2026.
Current net transaction value: -$650,308.

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 0001512868 Primary reporting owner

Davies Philip D

Relationship: Corp. VP-Global Sales & Mktg., Director
Address: 25 FRONTAGE ROAD, ANDOVER
Signature: /s/Quentin A. Fendelet Attorney in Fact for Philip D. Davies
Signature date: 05 Aug 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: +3,072
Change %: +160%
Price: $41.61^*
Shares after: 4,992
Date: 03 Aug 2026
Ownership: Direct

VICR transaction

Common Stock

Sale

Transaction value: $40,011
Shares: -200
Change %: -4%
Price: $200.06
Shares after: 4,792
Date: 03 Aug 2026
Ownership: Direct
Footnotes: F3, F4

VICR transaction

Common Stock

Sale

Transaction value: $20,162
Shares: -100
Change %: -2.1%
Price: $201.62
Shares after: 4,692
Date: 03 Aug 2026
Ownership: Direct
Footnotes: F3, F5

VICR transaction

Common Stock

Sale

Transaction value: $20,391
Shares: -100
Change %: -2.1%
Price: $203.91
Shares after: 4,592
Date: 03 Aug 2026
Ownership: Direct
Footnotes: F3, F6

VICR transaction

Common Stock

Sale

Transaction value: $41,284
Shares: -200
Change %: -4.4%
Price: $206.42
Shares after: 4,392
Date: 03 Aug 2026
Ownership: Direct
Footnotes: F3, F7

VICR transaction

Common Stock

Sale

Transaction value: $20,942
Shares: -100
Change %: -2.3%
Price: $209.42
Shares after: 4,292
Date: 03 Aug 2026
Ownership: Direct
Footnotes: F3, F8

VICR transaction

Common Stock

Sale

Transaction value: $106,268
Shares: -500
Change %: -12%
Price: $212.54
Shares after: 3,792
Date: 03 Aug 2026
Ownership: Direct
Footnotes: F3, F9

VICR transaction

Common Stock

Sale

Transaction value: $293,635
Shares: -1,372
Change %: -36%
Price: $214.02
Shares after: 2,420
Date: 03 Aug 2026
Ownership: Direct
Footnotes: F3, F10

VICR transaction

Common Stock

Sale

Transaction value: $86,011
Shares: -400
Change %: -17%
Price: $215.03
Shares after: 2,020
Date: 03 Aug 2026
Ownership: Direct
Footnotes: F3, F11

VICR transaction

Common Stock

Sale

Transaction value: $21,604
Shares: -100
Change %: -5%
Price: $216.04
Shares after: 1,920
Date: 03 Aug 2026
Ownership: Direct
Footnotes: F3, F12

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: -3,072
Change %: -21%
Price: $0.000000^*
Shares after: 11,607
Date: 03 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,072
Exercise price: $41.61
Footnotes: F1, F2

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

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 12 footnotes

Footnote F1

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.

Footnote F2

Options expire two years from each vest date.

Footnote F3

This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025.

Footnote F4

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $200.0500 to $200.0600.

Footnote F5

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $201.6200 to $201.6200.

Footnote F6

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $203.9100 to $203.9100.

Footnote F7

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $206.0600 to $206.7800.

Footnote F8

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $209.4200 to $209.4200.

Footnote F9

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $212.1800 to $212.9900.

Footnote F10

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $213.5200 to $214.5000.

Footnote F11

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $214.8500 to $215.1500.

Footnote F12

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $216.0400 to $216.0400.