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Vicor CEO sells 20,000 shares under 10b5-1 plan

VICOR CORP Chairman and CEO Patrizio Vinciarelli reported open-market sales of 20,000 shares of common stock on June 24, 2026.

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Form Type
4

Rhea-AI Filing Summary

VICOR CORP Chairman and CEO Patrizio Vinciarelli reported open-market sales of 20,000 shares of common stock on June 24, 2026. The shares were sold in multiple transactions at prices ranging from $314.0700 to $339.3100 per share, pursuant to a pre-arranged Rule 10b5-1 trading plan adopted on February 26, 2026.

After these transactions, he directly holds 8,468,090 shares of Vicor common stock and indirectly holds 167,125 shares as trustee of the Patrizio Vinciarelli Irrevocable Trust established for the benefit of his child.

Insider VINCIARELLI PATRIZIO
Role Chairman & CEO
Sold 20,000 shs ($6.53M)
Share of Position Sold 0.24%
Type Security Shares Price Value
Sale Common Stock 301 $314.4242 $95K
Sale Common Stock 1,999 $315.5663 $631K
Sale Common Stock 200 $316.53 $63K
Sale Common Stock 673 $317.6066 $214K
Sale Common Stock 600 $318.675 $191K
Sale Common Stock 1,100 $319.8423 $352K
Sale Common Stock 1,600 $321.0887 $514K
Sale Common Stock 1,622 $322.2362 $523K
Sale Common Stock 891 $323.0265 $288K
Sale Common Stock 76 $323.9839 $25K
Sale Common Stock 938 $325.1989 $305K
Sale Common Stock 200 $326.1556 $65K
Sale Common Stock 100 $327.1452 $33K
Sale Common Stock 708 $328.5498 $233K
Sale Common Stock 1,292 $329.8557 $426K
Sale Common Stock 800 $330.8488 $265K
Sale Common Stock 1,565 $332.2291 $520K
Sale Common Stock 2,058 $333.3946 $686K
Sale Common Stock 77 $333.7717 $26K
Sale Common Stock 1,263 $335.3272 $424K
Sale Common Stock 1,037 $336.199 $349K
Sale Common Stock 700 $337.29 $236K
Sale Common Stock 200 $339.29 $68K
Holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 8,468,090 shares (Direct); Common Stock — 167,125 shares (Indirect, See Footnote)
Holdings Before and After: Common Stock, 8,488,090 to 8,468,090 shares (Direct)
Other Insiders: 7 other insiders reported open-market sales of this stock in the 30 days up to this filing.
Footnotes (25)
  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 $314.0700 and $314.9800. 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 (25) 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 $315.1600 and $316.1300.
  5. F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $316.1900 and $316.8700.
  6. F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $317.2500 and $317.9900.
  7. F7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $318.3800 and $318.9900.
  8. F8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $319.450 and $320.4300.
  9. F9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $320.5950 and $321.5400.
  10. F10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $321.6100 and $322.6000.
  11. F11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $322.7800 and $323.5200.
  12. F12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $323.9800 and $324.0000.
  13. F13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $324.9800 and $325.8100.
  14. F14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $325.9900 and $326.4300.
  15. F15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $327.0000 and $327.2300.
  16. F16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $328.3800 and $329.1800.
  17. F17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $329.4400 and $330.3900.
  18. F18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.5900 and $331.2900.
  19. F19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $331.7500 and $332.7400.
  20. F20. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $332.7600 and $333.7100.
  21. F21. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $333.7600 and $333.9400.
  22. F22. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $334.8600 and $335.8300
  23. F23. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $335.8900 and $336.6000.
  24. F24. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $337.1000 and $337.9400.
  25. F25. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $339.2700 and $339.3100.
Shares sold 20,000 shares Open-market sales of Vicor common stock on June 24, 2026
Sale price range $314.0700–$339.3100 per share Weighted-average price ranges across multiple transactions
Direct holdings after sale 8,487,789 shares Vicor common stock directly owned post-transaction
Indirect trust holdings 167,125 shares Held as trustee of the Patrizio Vinciarelli Irrevocable Trust
Number of sale transactions 23 transactions Non-derivative open-market sales reported in Form 4
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.
irrevocable trust financial
"These shares are 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""
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.

FAQ

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

What insider transaction did VICR CEO Patrizio Vinciarelli report?
Patrizio Vinciarelli reported selling 20,000 shares of Vicor common stock. The open-market sales occurred on June 24, 2026, and were broken into multiple transactions at different prices throughout the trading day.

At what prices did the VICR CEO sell his 20,000 shares?
The 20,000 Vicor shares were sold at weighted average prices within specific ranges. Footnotes state these trades occurred between $314.0700 and $339.3100 per share across multiple separate transactions.

How many VICR shares does the CEO hold after these sales?
Following the reported sales, Patrizio Vinciarelli holds 8,487,789 Vicor common shares directly. In addition, he indirectly holds 167,125 shares as trustee of an irrevocable trust established for the benefit of his child.

Was the VICR CEO sale made under a Rule 10b5-1 plan?
Yes. A footnote explains the sale was effected pursuant to a Rule 10b5-1 trading plan. The plan was adopted by Patrizio Vinciarelli on February 26, 2026, indicating the transactions were pre-arranged rather than opportunistic.

Does the VICR Form 4 include any derivative security exercises?
No. The Form 4 data show only non-derivative common stock transactions. The derivativeSummary indicates no derivative exercises or other derivative transactions were reported in this filing for Patrizio Vinciarelli.

What indirect VICR holdings are reported for the CEO?
The filing reports 167,125 Vicor shares held indirectly. A footnote states these shares are held by Patrizio Vinciarelli as trustee of the Patrizio Vinciarelli Irrevocable Trust, established for the benefit of his child.

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)
06/24/2026		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 Stock06/24/2026S(2)301D$314.4242(3)8,487,789D
Common Stock06/24/2026S(2)1,999D$315.5663(4)8,485,790D
Common Stock06/24/2026S(2)200D$316.53(5)8,485,590D
Common Stock06/24/2026S(2)673D$317.6066(6)8,484,917D
Common Stock06/24/2026S(2)600D$318.675(7)8,484,317D
Common Stock06/24/2026S(2)1,100D$319.8423(8)8,483,217D
Common Stock06/24/2026S(2)1,600D$321.0887(9)8,481,617D
Common Stock06/24/2026S(2)1,622D$322.2362(10)8,479,995D
Common Stock06/24/2026S(2)891D$323.0265(11)8,479,104D
Common Stock06/24/2026S(2)76D$323.9839(12)8,479,028D
Common Stock06/24/2026S(2)938D$325.1989(13)8,478,090D
Common Stock06/24/2026S(2)200D$326.1556(14)8,477,890D
Common Stock06/24/2026S(2)100D$327.1452(15)8,477,790D
Common Stock06/24/2026S(2)708D$328.5498(16)8,477,082D
Common Stock06/24/2026S(2)1,292D$329.8557(17)8,475,790D
Common Stock06/24/2026S(2)800D$330.8488(18)8,474,990D
Common Stock06/24/2026S(2)1,565D$332.2291(19)8,473,425D
Common Stock06/24/2026S(2)2,058D$333.3946(20)8,471,367D
Common Stock06/24/2026S(2)77D$333.7717(21)8,471,290D
Common Stock06/24/2026S(2)1,263D$335.3272(22)8,470,027D
Common Stock06/24/2026S(2)1,037D$336.199(23)8,468,990D
Common Stock06/24/2026S(2)700D$337.29(24)8,468,290D
Common Stock06/24/2026S(2)200D$339.29(25)8,468,090D
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 $314.0700 and $314.9800. 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 (25) 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 $315.1600 and $316.1300.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $316.1900 and $316.8700.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $317.2500 and $317.9900.
7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $318.3800 and $318.9900.
8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $319.450 and $320.4300.
9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $320.5950 and $321.5400.
10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $321.6100 and $322.6000.
11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $322.7800 and $323.5200.
12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $323.9800 and $324.0000.
13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $324.9800 and $325.8100.
14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $325.9900 and $326.4300.
15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $327.0000 and $327.2300.
16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $328.3800 and $329.1800.
17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $329.4400 and $330.3900.
18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.5900 and $331.2900.
19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $331.7500 and $332.7400.
20. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $332.7600 and $333.7100.
21. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $333.7600 and $333.9400.
22. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $334.8600 and $335.8300
23. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $335.8900 and $336.6000.
24. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $337.1000 and $337.9400.
25. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $339.2700 and $339.3100.
/s/Quentin A. Fendelet Attorney in Fact for Patrizio Vinciarelli06/25/2026
** 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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