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

Vicor Corp Chairman and CEO Patrizio Vinciarelli reported open‑market sales of 20,000 shares of common stock on June 26, 2026.

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
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 26, 2026. The shares were sold in multiple transactions at weighted average prices generally between about $303.70 and $326.93, as detailed in the Form 4 footnotes and described as executed under a Rule 10b5-1 trading plan adopted on February 26, 2026. After these sales, he directly owns 8,428,090 shares and also indirectly holds 167,125 shares as trustee of an irrevocable trust for the benefit of his child.

Positive

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Negative

  • None.
Insider VINCIARELLI PATRIZIO
Role Chairman & CEO
Sold 20,000 shs ($6.46M)
Type Security Shares Price Value
Sale Common Stock 100 $303.70 $30K
Sale Common Stock 400 $305.2385 $122K
Sale Common Stock 442 $306.4354 $135K
Sale Common Stock 300 $307.6367 $92K
Sale Common Stock 276 $308.6441 $85K
Sale Common Stock 224 $309.4919 $69K
Sale Common Stock 400 $311.1625 $124K
Sale Common Stock 900 $313.0989 $282K
Sale Common Stock 500 $314.024 $157K
Sale Common Stock 700 $315.4686 $221K
Sale Common Stock 400 $316.6275 $127K
Sale Common Stock 100 $317.67 $32K
Sale Common Stock 258 $319.0695 $82K
Sale Common Stock 200 $320.82 $64K
Sale Common Stock 200 $322.425 $64K
Sale Common Stock 200 $325.495 $65K
Sale Common Stock 14,400 $326.93 $4.71M
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 8,428,090 shares (Direct); Common Stock — 167,125 shares (Indirect, See Footnote)
Footnotes (19)
  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 $303.7000 and $$303.7000. 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 (19) 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 $305.0500 and $305.7300.
  5. F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $306.1700 and $307.1300.
  6. F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $307.1800 and $308.0400.
  7. F7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $308.3300 and $309.0100.
  8. F8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $309.4100 and $309.8200.
  9. F9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $310.7800 and $311.6900.
  10. F10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $312.7300 and $313.3800.
  11. F11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $313.7600 and $314.4300.
  12. F12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $315.0900 and $315.8800.
  13. F13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $316.2000 and $316.9100.
  14. F14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $317.6700 and $317.6700.
  15. F15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $318.6900 and $319.5300.
  16. F16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $320.6200 and $321.0200.
  17. F17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $321.9600 and $322.8900.
  18. F18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $325.4000 and $325.5900.
  19. F19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $326.9300 and $326.9300.
Shares sold 20,000 shares Open-market sales on June 26, 2026
Highest reported sale price $326.93 per share Weighted average price for one sale line
Lowest reported sale price $303.70 per share Weighted average price for one sale line
Direct holdings after sales 8,447,990 shares Common stock directly owned post-transaction
Indirect trust holdings 167,125 shares Held as trustee of irrevocable trust
Number of sale entries 17 transactions Non-derivative sale lines on June 26, 2026
Net share direction 20,000 net shares sold transactionSummary netBuySellShares
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. 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
"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.
indirect ownership financial
""ownership_type": "indirect""

FAQ

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

What insider transaction did VICOR CORP (VICR) report for Patrizio Vinciarelli?
VICOR CORP reported that Chairman and CEO Patrizio Vinciarelli sold 20,000 shares of common stock on June 26, 2026. These were open‑market sales executed in multiple trades at different prices, as disclosed in the Form 4 filing.

At what prices did Patrizio Vinciarelli sell VICR shares on June 26, 2026?
The filing shows weighted average sale prices generally between about $303.70 and $326.93 per share. Each Form 4 line reflects a specific weighted price, with footnotes explaining that numerous individual trades occurred within stated price ranges that day.

How many VICOR CORP shares does Patrizio Vinciarelli hold after these transactions?
After the June 26, 2026 sales, Patrizio Vinciarelli directly owns 8,447,990 shares of Vicor common stock. He also indirectly holds 167,125 shares as trustee of an irrevocable trust established for the benefit of his child, according to the Form 4 disclosure.

Were the June 26, 2026 VICR insider sales made under a Rule 10b5-1 plan?
Yes. A Form 4 footnote states the June 26, 2026 sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Patrizio Vinciarelli on February 26, 2026. Such plans pre‑schedule trades, indicating they were arranged in advance.

What indirect VICOR CORP holdings are reported for Patrizio Vinciarelli?
The Form 4 reports 167,125 VICR shares held indirectly by Patrizio Vinciarelli as trustee of the Patrizio Vinciarelli Irrevocable Trust dated December 21, 2012. The trust was established for the benefit of his child and appears separately from his direct holdings.

How many individual sale transactions did VICOR’s CEO report on the Form 4?
The insider filing summarizes 17 separate open‑market sale entries of Vicor common stock on June 26, 2026. Together they total 20,000 shares sold, with each entry reflecting a distinct weighted average price and detailed price ranges described in multiple footnotes.

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

Form 4 Insider Transactions: What Each Field Means →
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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)
06/26/2026		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 Stock06/26/2026S(2)100D$303.7(3)8,447,990D
Common Stock06/26/2026S(2)400D$305.2385(4)8,447,590D
Common Stock06/26/2026S(2)442D$306.4354(5)8,447,148D
Common Stock06/26/2026S(2)300D$307.6367(6)8,446,848D
Common Stock06/26/2026S(2)276D$308.6441(7)8,446,572D
Common Stock06/26/2026S(2)224D$309.4919(8)8,446,348D
Common Stock06/26/2026S(2)400D$311.1625(9)8,445,948D
Common Stock06/26/2026S(2)900D$313.0989(10)8,445,048D
Common Stock06/26/2026S(2)500D$314.024(11)8,444,548D
Common Stock06/26/2026S(2)700D$315.4686(12)8,443,848D
Common Stock06/26/2026S(2)400D$316.6275(13)8,443,448D
Common Stock06/26/2026S(2)100D$317.67(14)8,443,348D
Common Stock06/26/2026S(2)258D$319.0695(15)8,443,090D
Common Stock06/26/2026S(2)200D$320.82(16)8,442,890D
Common Stock06/26/2026S(2)200D$322.425(17)8,442,690D
Common Stock06/26/2026S(2)200D$325.495(18)8,442,490D
Common Stock06/26/2026S(2)14,400D$326.93(19)8,428,090D
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 $303.7000 and $$303.7000. 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 (19) 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 $305.0500 and $305.7300.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $306.1700 and $307.1300.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $307.1800 and $308.0400.
7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $308.3300 and $309.0100.
8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $309.4100 and $309.8200.
9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $310.7800 and $311.6900.
10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $312.7300 and $313.3800.
11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $313.7600 and $314.4300.
12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $315.0900 and $315.8800.
13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $316.2000 and $316.9100.
14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $317.6700 and $317.6700.
15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $318.6900 and $319.5300.
16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $320.6200 and $321.0200.
17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $321.9600 and $322.8900.
18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $325.4000 and $325.5900.
19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $326.9300 and $326.9300.
/s/Quentin A. Fendelet Attorney in Fact for Patrizio Vinciarelli06/29/2026
** 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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