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Vicor CEO sells 11,240 shares under 10b5-1 plan

Vicor Corporation Chairman and CEO Patrizio Vinciarelli reported open‑market sales of 11,240 shares of Vicor common stock.

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

Rhea-AI Filing Summary

Vicor Corporation Chairman and CEO Patrizio Vinciarelli reported open‑market sales of 11,240 shares of Vicor common stock. The transactions occurred on June 29, 2026 in multiple trades at weighted average prices ranging from about $321.99 to $364.95 per share, according to detailed price ranges in the filing footnotes.

The filing states these sales were made under a pre‑arranged Rule 10b5‑1 trading plan adopted on February 26, 2026. After the sales, Vinciarelli directly holds 8,416,850 shares and also has indirect beneficial ownership of 167,125 shares held in an irrevocable trust for the benefit of his child, where he serves as trustee.

Positive

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Insider VINCIARELLI PATRIZIO
Role Chairman & CEO
Sold 11,240 shs ($3.88M)
Type Security Shares Price Value
Sale Common Stock 200 $322.10 $64K
Sale Common Stock 400 $324.59 $130K
Sale Common Stock 100 $326.16 $33K
Sale Common Stock 100 $328.51 $33K
Sale Common Stock 600 $330.8623 $199K
Sale Common Stock 200 $331.805 $66K
Sale Common Stock 700 $333.4466 $233K
Sale Common Stock 700 $334.42 $234K
Sale Common Stock 890 $335.9037 $299K
Sale Common Stock 110 $337.0673 $37K
Sale Common Stock 200 $337.925 $68K
Sale Common Stock 300 $339.7333 $102K
Sale Common Stock 300 $340.57 $102K
Sale Common Stock 800 $342.0375 $274K
Sale Common Stock 300 $343.4667 $103K
Sale Common Stock 334 $345.2681 $115K
Sale Common Stock 466 $346.2194 $161K
Sale Common Stock 100 $348.22 $35K
Sale Common Stock 500 $350.295 $175K
Sale Common Stock 200 $351.985 $70K
Sale Common Stock 500 $354.3938 $177K
Sale Common Stock 200 $355.721 $71K
Sale Common Stock 500 $357.084 $179K
Sale Common Stock 800 $358.1113 $286K
Sale Common Stock 400 $359.0425 $144K
Sale Common Stock 100 $361.40 $36K
Sale Common Stock 200 $362.6174 $73K
Sale Common Stock 1,040 $364.4701 $379K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 8,416,850 shares (Direct); Common Stock — 167,125 shares (Indirect, See Footnote)
Footnotes (30)
  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 $321.9900 and $322.2100. 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 (30) 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 $324.1200 and $324.9800.
  5. F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $326.1600 and $326.1600.
  6. F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $328.5100 and $328.5100.
  7. F7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.0700 and $331.0100.
  8. F8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $331.7000 and $331.9100.
  9. F9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $333.0500 and $334.0100.
  10. F10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $334.0500 and $334.7200.
  11. F11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $335.3200 and $336.2500.
  12. F12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $336.4400 and $337.1300.
  13. F13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $337.7200 and $338.1300.
  14. F14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $339.2000 and $340.0000.
  15. F15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $340.2700 and $340.9500.
  16. F16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $341.7200 and $342.4900.
  17. F17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $343.1300 and $343.6800.
  18. F18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $344.7200 and $345.5300.
  19. F19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $345.9000 and $346.6400.
  20. F20. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $348.2200 and $348.2200.
  21. F21. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $349.8700 and $350.6600.
  22. F22. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $351.8900 and $352.0800.
  23. F23. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $353.8600 and $354.6900.
  24. F24. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $355.3200 and $356.1200.
  25. F25. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $356.3700 and $357.3400.
  26. F26. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $357.5700 and $358.5000.
  27. F27. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $358.6100 and $359.4300.
  28. F28. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $361.4000 and $361.4000.
  29. F29. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $362.4400 and $362.6800.
  30. F30. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $363.9800 and $364.9500.
Shares sold 11,240 shares Open-market sales on June 29, 2026
Direct holdings after transaction 8,427,890 shares Common stock directly owned after June 29, 2026 sales
Indirect trust holdings 167,125 shares Held in irrevocable trust where CEO is trustee
Highest reported sale price $364.4701 per share One of multiple weighted average prices on June 29, 2026
Lowest price range floor $321.9900 per share Lower bound of a reported intraday price range
Number of sale transactions 28 transactions Non-derivative open-market sale entries in Form 4
10b5-1 plan adoption date February 26, 2026 Rule 10b5-1 trading plan governing these sales
Net buy/sell direction Net sale of 11,240 shares Transaction summary netBuySellShares field
Rule 10b5-1 trading plan regulatory
"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person"
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. These shares were sold in multiple transactions"
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.
irrevocable trust financial
"held by the reporting person as Trustee of the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012"
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.
open-market sale financial
"transaction_action":"open-market sale","transaction_code_description":"Sale in open market or private transaction""
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.
beneficial ownership financial
"established for the benefit of the child of the reporting person"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

FAQ

What insider transaction did Vicor (VICR) report for Patrizio Vinciarelli?
Vicor reported that Chairman and CEO Patrizio Vinciarelli sold 11,240 shares of common stock in multiple open‑market trades on June 29, 2026. These transactions were disclosed in a Form 4 filing and classified as routine sales rather than option exercises or gifts.

At what prices did Vicor (VICR) CEO sell his shares on June 29, 2026?
The CEO’s shares were sold in numerous transactions at weighted average prices spanning roughly $321.99 to $364.95 per share. Footnotes explain that each reported price represents a weighted average of multiple trades within narrower price ranges during that trading day.

How many Vicor (VICR) shares does the CEO hold after the June 29, 2026 sales?
After these sales, Patrizio Vinciarelli directly owns 8,427,890 Vicor common shares. He also has indirect beneficial ownership of 167,125 additional shares held in an irrevocable trust established for his child, where he serves as trustee, according to the filing’s ownership table and footnotes.

Were the recent Vicor (VICR) insider sales made under a Rule 10b5-1 plan?
Yes. A footnote states the June 29, 2026 sales were executed under a Rule 10b5‑1 trading plan adopted on February 26, 2026. Such plans pre‑schedule trades, helping separate routine portfolio management from discretionary, market‑timed selling by corporate insiders.

Does the Vicor (VICR) Form 4 show any option exercises or derivative activity?
No derivative transactions are listed in this Form 4. The transaction summary shows zero exercises and zero derivative transactions, indicating the reported activity consists solely of open‑market sales of common stock, with no option exercises, conversions, or other derivative‑related movements.

What indirect holdings of Vicor (VICR) stock are reported for the CEO?
The filing reports 167,125 Vicor shares held indirectly through the Patrizio Vinciarelli Irrevocable Trust U/A dated December 21, 2012. A footnote explains this trust was established for the benefit of his child, with Vinciarelli serving as trustee for those shares.

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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)
06/29/2026		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 Stock06/29/2026S(2)200D$322.1(3)8,427,890D
Common Stock06/29/2026S(2)400D$324.59(4)8,427,490D
Common Stock06/29/2026S(2)100D$326.16(5)8,427,390D
Common Stock06/29/2026S(2)100D$328.51(6)8,427,290D
Common Stock06/29/2026S(2)600D$330.8623(7)8,426,690D
Common Stock06/29/2026S(2)200D$331.805(8)8,426,490D
Common Stock06/29/2026S(2)700D$333.4466(9)8,425,790D
Common Stock06/29/2026S(2)700D$334.42(10)8,425,090D
Common Stock06/29/2026S(2)890D$335.9037(11)8,424,200D
Common Stock06/29/2026S(2)110D$337.0673(12)8,424,090D
Common Stock06/29/2026S(2)200D$337.925(13)8,423,890D
Common Stock06/29/2026S(2)300D$339.7333(14)8,423,590D
Common Stock06/29/2026S(2)300D$340.57(15)8,423,290D
Common Stock06/29/2026S(2)800D$342.0375(16)8,422,490D
Common Stock06/29/2026S(2)300D$343.4667(17)8,422,190D
Common Stock06/29/2026S(2)334D$345.2681(18)8,421,856D
Common Stock06/29/2026S(2)466D$346.2194(19)8,421,390D
Common Stock06/29/2026S(2)100D$348.22(20)8,421,290D
Common Stock06/29/2026S(2)500D$350.295(21)8,420,790D
Common Stock06/29/2026S(2)200D$351.985(22)8,420,590D
Common Stock06/29/2026S(2)500D$354.3938(23)8,420,090D
Common Stock06/29/2026S(2)200D$355.721(24)8,419,890D
Common Stock06/29/2026S(2)500D$357.084(25)8,419,390D
Common Stock06/29/2026S(2)800D$358.1113(26)8,418,590D
Common Stock06/29/2026S(2)400D$359.0425(27)8,418,190D
Common Stock06/29/2026S(2)100D$361.4(28)8,418,090D
Common Stock06/29/2026S(2)200D$362.6174(29)8,417,890D
Common Stock06/29/2026S(2)1,040D$364.4701(30)8,416,850D
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 $321.9900 and $322.2100. 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 (30) 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 $324.1200 and $324.9800.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $326.1600 and $326.1600.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $328.5100 and $328.5100.
7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.0700 and $331.0100.
8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $331.7000 and $331.9100.
9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $333.0500 and $334.0100.
10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $334.0500 and $334.7200.
11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $335.3200 and $336.2500.
12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $336.4400 and $337.1300.
13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $337.7200 and $338.1300.
14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $339.2000 and $340.0000.
15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $340.2700 and $340.9500.
16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $341.7200 and $342.4900.
17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $343.1300 and $343.6800.
18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $344.7200 and $345.5300.
19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $345.9000 and $346.6400.
20. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $348.2200 and $348.2200.
21. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $349.8700 and $350.6600.
22. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $351.8900 and $352.0800.
23. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $353.8600 and $354.6900.
24. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $355.3200 and $356.1200.
25. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $356.3700 and $357.3400.
26. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $357.5700 and $358.5000.
27. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $358.6100 and $359.4300.
28. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $361.4000 and $361.4000.
29. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $362.4400 and $362.6800.
30. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $363.9800 and $364.9500.
/s/Quentin A. Fendelet Attorney in Fact for Patrizio Vinciarelli06/30/2026
** 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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