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Vicor CEO sells 20,000 shares in planned trade

Vicor Corporation Chairman and CEO Patrizio Vinciarelli reported open-market sales of 20,000 shares of Vicor common stock on June 11, 2026.

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

Rhea-AI Filing Summary

Vicor Corporation Chairman and CEO Patrizio Vinciarelli reported open-market sales of 20,000 shares of Vicor common stock on June 11, 2026. The shares were sold in 17 separate transactions at weighted average prices ranging from about $280.33 to $300.49.

According to the filing, these sales were effected under a pre-arranged Rule 10b5-1 trading plan adopted on February 26, 2026. After the sales, Vinciarelli directly owned 8,628,090 shares of Vicor common stock and indirectly held 167,125 shares as trustee of an irrevocable trust established for the benefit of his child.

Positive

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Negative

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Insider VINCIARELLI PATRIZIO
Role Chairman & CEO
Sold 20,000 shs ($5.81M)
Type Security Shares Price Value
Sale Common Stock 200 $280.563 $56K
Sale Common Stock 600 $281.983 $169K
Sale Common Stock 471 $282.8559 $133K
Sale Common Stock 1,329 $283.8823 $377K
Sale Common Stock 868 $285.4261 $248K
Sale Common Stock 2,332 $286.2952 $668K
Sale Common Stock 2,240 $287.3028 $644K
Sale Common Stock 1,532 $288.2716 $442K
Sale Common Stock 628 $289.21 $182K
Sale Common Stock 2,000 $290.3711 $581K
Sale Common Stock 1,600 $292.2653 $468K
Sale Common Stock 1,200 $293.8899 $353K
Sale Common Stock 600 $294.64 $177K
Sale Common Stock 600 $296.4822 $178K
Sale Common Stock 2,100 $297.8041 $625K
Sale Common Stock 1,500 $299.0307 $449K
Sale Common Stock 200 $300.485 $60K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 8,628,090 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 $280.33 and $280.69. 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 $281.35 and $282.23.
  5. F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $282.71 and $283.65.
  6. F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $283.71 and $284.19.
  7. F7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $284.84 and $285.83.
  8. F8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $285.89 and $286.54.
  9. F9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $286.90 and $287.89.
  10. F10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $287.92 and $288.80.
  11. F11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $289.06 and $289.48.
  12. F12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $290.19 and $290.71.
  13. F13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $291.84 and $292.83.
  14. F14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $293.41 and $294.24.
  15. F15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $294.43 and $294.74.
  16. F16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $296.06 and $297.04.
  17. F17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $297.27 and $298.25.
  18. F18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $298.68 and $299.37.
  19. F19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $300.48 and $300.49.
Shares sold 20,000 shares Total common shares sold on June 11, 2026
Post-sale direct holdings 8,647,890 shares Direct common stock owned after transactions
Indirect trust holdings 167,125 shares Held as trustee of irrevocable trust
Highest reported sale price $300.49 per share Upper end of disclosed price range
Lowest reported sale price $280.33 per share Lower end of disclosed price range
Number of sale transactions 17 transactions Non-derivative open-market sales on June 11, 2026
Trading plan adoption date February 26, 2026 Rule 10b5-1 plan for these sales
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, established for the benefit of the child of the reporting person."
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.

How many VICR shares did the Vicor CEO sell in this Form 4?
The Vicor CEO reported selling 20,000 shares of Vicor (VICR) common stock. These were executed as 17 separate open-market transactions on June 11, 2026, at various weighted average prices between about $280 and $300 per share.

At what prices were the VICR shares sold by the Vicor CEO?
The reported Vicor (VICR) share sales used weighted average prices across multiple trades. Footnotes state price ranges from approximately $280.33 to $300.49 per share, with each line item representing sales within narrower sub-ranges of that overall band.

How many VICR shares does the Vicor CEO hold after these transactions?
After the reported sales, the Vicor (VICR) CEO directly held 8,647,890 shares of common stock. He also indirectly held 167,125 shares as trustee of an irrevocable trust established for the benefit of his child, according to the filing footnotes.

Were the Vicor CEO’s VICR share sales under a Rule 10b5-1 trading plan?
Yes. A footnote states the sale was effected under a Rule 10b5-1 trading plan adopted on February 26, 2026. Such plans schedule trades in advance, indicating the timing of these sales was pre-arranged rather than opportunistic.

Does the Vicor Form 4 include any derivative or option exercises?
No derivative or option exercises are shown in this Form 4. The filing’s transaction data and derivative summary indicate only non-derivative common stock sales totaling 20,000 shares, with no reported exercises or conversions of options or other derivative securities.

What indirect VICR holdings does the Vicor CEO report on this Form 4?
The CEO reports 167,125 VICR shares held indirectly as trustee of the Patrizio Vinciarelli Irrevocable Trust dated 12/21/2012. The trust was established for the benefit of his child, and these shares are reported as indirect beneficial ownership in the Form 4.

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)
C/O VICOR CORPORATION
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)
06/11/2026		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 Stock06/11/2026S(2)200D$280.563(3)8,647,890D
Common Stock06/11/2026S(2)600D$281.983(4)8,647,290D
Common Stock06/11/2026S(2)471D$282.8559(5)8,646,819D
Common Stock06/11/2026S(2)1,329D$283.8823(6)8,645,490D
Common Stock06/11/2026S(2)868D$285.4261(7)8,644,622D
Common Stock06/11/2026S(2)2,332D$286.2952(8)8,642,290D
Common Stock06/11/2026S(2)2,240D$287.3028(9)8,640,050D
Common Stock06/11/2026S(2)1,532D$288.2716(10)8,638,518D
Common Stock06/11/2026S(2)628D$289.21(11)8,637,890D
Common Stock06/11/2026S(2)2,000D$290.3711(12)8,635,890D
Common Stock06/11/2026S(2)1,600D$292.2653(13)8,634,290D
Common Stock06/11/2026S(2)1,200D$293.8899(14)8,633,090D
Common Stock06/11/2026S(2)600D$294.64(15)8,632,490D
Common Stock06/11/2026S(2)600D$296.4822(16)8,631,890D
Common Stock06/11/2026S(2)2,100D$297.8041(17)8,629,790D
Common Stock06/11/2026S(2)1,500D$299.0307(18)8,628,290D
Common Stock06/11/2026S(2)200D$300.485(19)8,628,090D
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 $280.33 and $280.69. 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 $281.35 and $282.23.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $282.71 and $283.65.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $283.71 and $284.19.
7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $284.84 and $285.83.
8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $285.89 and $286.54.
9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $286.90 and $287.89.
10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $287.92 and $288.80.
11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $289.06 and $289.48.
12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $290.19 and $290.71.
13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $291.84 and $292.83.
14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $293.41 and $294.24.
15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $294.43 and $294.74.
16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $296.06 and $297.04.
17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $297.27 and $298.25.
18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $298.68 and $299.37.
19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $300.48 and $300.49.
/s/Quentin A. Fendelet Attorney in fact for Patrizio Vinciarelli06/15/2026
** 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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