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Vicor CEO sells 20,000 shares under trading plan

Vicor Corporation Chairman, CEO and 10% owner Patrizio Vinciarelli reported open-market sales of 20,000 shares of Vicor common stock.

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

Vicor Corporation Chairman, CEO and 10% owner Patrizio Vinciarelli reported open-market sales of 20,000 shares of Vicor common stock. The transactions occurred on July 1, 2026 in 19 separate sales at weighted average prices between $344.50 and $366.71.

The filing states these sales were effected under a Rule 10b5-1 trading plan adopted on February 26, 2026, indicating they were pre-arranged. Following the transactions, Vinciarelli directly owns 8,368,090 shares and indirectly holds 167,125 shares as trustee of an irrevocable trust for his child.

Positive

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Negative

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Insider VINCIARELLI PATRIZIO
Role Chairman & CEO
Sold 20,000 shs ($7.13M)
Type Security Shares Price Value
Sale Common Stock 148 $345.0216 $51K
Sale Common Stock 52 $345.6237 $18K
Sale Common Stock 1,400 $348.88 $488K
Sale Common Stock 1,289 $350.0059 $451K
Sale Common Stock 300 $351.013 $105K
Sale Common Stock 1,509 $352.2154 $531K
Sale Common Stock 1,658 $353.541 $586K
Sale Common Stock 2,063 $354.8001 $732K
Sale Common Stock 250 $356.062 $89K
Sale Common Stock 998 $356.8678 $356K
Sale Common Stock 2,175 $357.8595 $778K
Sale Common Stock 1,997 $358.8354 $717K
Sale Common Stock 1,359 $359.8662 $489K
Sale Common Stock 1,922 $361.1788 $694K
Sale Common Stock 1,278 $362.0259 $463K
Sale Common Stock 322 $362.9656 $117K
Sale Common Stock 880 $364.4986 $321K
Sale Common Stock 200 $365.50 $73K
Sale Common Stock 200 $366.695 $73K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 8,368,090 shares (Direct); Common Stock — 167,125 shares (Indirect, See Footnote)
Footnotes (21)
  1. 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.
  2. F2. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.
  3. F3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $344.5000 and $345.3300. The reporting person undertakes to provide to Vicor Corporation, any security holder of Vicor Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (3) through (21) to this Form 4.
  4. F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $345.6100 and $346.0000.
  5. F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $348.4300 and $349.3900.
  6. F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $349.5500 and $350.4700.
  7. F7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $350.8400 and $351.4400.
  8. F8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $351.8700 and $352.5600.
  9. F9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $353.1500 and $354.1400.
  10. F10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $354.2900 and $355.2800.
  11. F11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $355.3100 and $356.2700.
  12. F12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $356.3300 and $357.2600.
  13. F13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $357.4400 and $358.4300.
  14. F14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $358.4500 and $359.4400.
  15. F15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $359.4500 and $360.2700.
  16. F16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $360.6000 and $361.5500.
  17. F17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $361.6800 and $362.5700.
  18. F18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $362.7600 and $363.2900.
  19. F19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $364.1700 and $364.9600.
  20. F20. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $365.5000 and $365.5000.
  21. F21. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $366.6800 and $366.7100.
Shares sold 20,000 shares Total common stock sold on July 1, 2026
Sale price range $344.50–$366.71 per share Weighted average price ranges across multiple transactions
Direct holdings after sale 8,387,942 shares Common stock directly owned following transactions
Indirect trust holdings 167,125 shares Shares held as trustee of irrevocable trust for child
Number of sale transactions 19 transactions Open-market or private sales of common stock
Trading plan adoption date February 26, 2026 Date Rule 10b5-1 trading plan was adopted
Rule 10b5-1 trading plan regulatory
"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
open-market sale financial
"transaction_action": "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
irrevocable trust financial
"Irrevocable Trust U/A Dated 12/21/2012, established for the benefit of the child"
An irrevocable trust is a legal arrangement where an owner transfers assets into a separate entity managed by a trustee and gives up the power to modify or reclaim those assets. For investors it matters because putting stock or other holdings into such a trust can change who controls and benefits from the assets, affect taxes and creditor protection, and influence how easy it is to sell or value those holdings—like placing valuables in a locked safe overseen by someone else.
indirect ownership financial
"These shares are held by the reporting person as Trustee of the Patrizio Vinciarelli Irrevocable Trust"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Vicor (VICR) CEO Patrizio Vinciarelli report in this Form 4?
He reported selling 20,000 shares of Vicor common stock in multiple open-market transactions. The sales occurred on July 1, 2026 and were executed under a pre-arranged Rule 10b5-1 trading plan adopted on February 26, 2026.

How many Vicor (VICR) shares did the CEO sell and at what prices?
He sold 20,000 shares of Vicor common stock across 19 transactions. The Form 4 states the weighted average sale prices for these trades ranged from $344.50 to $366.71 per share, with detailed price breakdowns available upon request to Vicor or the SEC staff.

How many Vicor (VICR) shares does the CEO hold after these transactions?
After the reported sales, Patrizio Vinciarelli directly owns 8,387,942 Vicor common shares. He also indirectly holds 167,125 additional shares as trustee of an irrevocable trust established for the benefit of his child, according to the Form 4 disclosure and related footnote.

Were the Vicor (VICR) CEO’s stock sales part of a Rule 10b5-1 plan?
Yes. A Form 4 footnote explains the sales were effected under a Rule 10b5-1 trading plan. This plan was adopted on February 26, 2026, indicating the transactions were pre-scheduled rather than opportunistic trades based on short-term market movements or new nonpublic information.

What does the indirect Vicor (VICR) ownership in the Form 4 represent?
The indirect holding of 167,125 shares is held by Vinciarelli as trustee of the Patrizio Vinciarelli Irrevocable Trust. The trust, dated December 21, 2012, was established for the benefit of his child, and these shares are reported as indirect ownership on the Form 4.

How many individual transactions are included in this Vicor (VICR) Form 4?
The summary data show 19 sale transactions of Vicor common stock. Each is coded as an open-market or private sale, and together they total 20,000 shares sold. One additional entry reflects indirect holdings as trustee of an irrevocable trust rather than a new buy or sell.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
VINCIARELLI PATRIZIO
(Last)(First)(Middle)
25 FRONTAGE ROAD
(Street)
ANDOVER MASSACHUSETTS 01810
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
VICOR CORP [ VICR ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirectorX10% Owner
XOfficer (give title below)Other (specify below)
Chairman & CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock167,125ISee Footnote(1)
Common Stock07/01/2026S(2)148D$345.0216(3)8,387,942D
Common Stock07/01/2026S(2)52D$345.6237(4)8,387,890D
Common Stock07/01/2026S(2)1,400D$348.88(5)8,386,490D
Common Stock07/01/2026S(2)1,289D$350.0059(6)8,385,201D
Common Stock07/01/2026S(2)300D$351.013(7)8,384,901D
Common Stock07/01/2026S(2)1,509D$352.2154(8)8,383,392D
Common Stock07/01/2026S(2)1,658D$353.541(9)8,381,734D
Common Stock07/01/2026S(2)2,063D$354.8001(10)8,379,671D
Common Stock07/01/2026S(2)250D$356.062(11)8,379,421D
Common Stock07/01/2026S(2)998D$356.8678(12)8,378,423D
Common Stock07/01/2026S(2)2,175D$357.8595(13)8,376,248D
Common Stock07/01/2026S(2)1,997D$358.8354(14)8,374,251D
Common Stock07/01/2026S(2)1,359D$359.8662(15)8,372,892D
Common Stock07/01/2026S(2)1,922D$361.1788(16)8,370,970D
Common Stock07/01/2026S(2)1,278D$362.0259(17)8,369,692D
Common Stock07/01/2026S(2)322D$362.9656(18)8,369,370D
Common Stock07/01/2026S(2)880D$364.4986(19)8,368,490D
Common Stock07/01/2026S(2)200D$365.5(20)8,368,290D
Common Stock07/01/2026S(2)200D$366.695(21)8,368,090D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. 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.
2. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.
3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $344.5000 and $345.3300. The reporting person undertakes to provide to Vicor Corporation, any security holder of Vicor Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (3) through (21) to this Form 4.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $345.6100 and $346.0000.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $348.4300 and $349.3900.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $349.5500 and $350.4700.
7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $350.8400 and $351.4400.
8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $351.8700 and $352.5600.
9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $353.1500 and $354.1400.
10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $354.2900 and $355.2800.
11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $355.3100 and $356.2700.
12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $356.3300 and $357.2600.
13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $357.4400 and $358.4300.
14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $358.4500 and $359.4400.
15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $359.4500 and $360.2700.
16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $360.6000 and $361.5500.
17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $361.6800 and $362.5700.
18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $362.7600 and $363.2900.
19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $364.1700 and $364.9600.
20. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $365.5000 and $365.5000.
21. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $366.6800 and $366.7100.
/s/Quentin A. Fendelet Attorney in Fact for Patrizio Vinciarelli07/06/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

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