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Vicor (NASDAQ: VICR) CEO sells 20,000 shares under Rule 10b5-1 plan

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 common stock on June 10, 2026, at weighted average prices between $269.14 and $300.36 per share. The sales were made under a pre-arranged Rule 10b5-1 trading plan adopted on February 26, 2026. Following these transactions, he holds 8,667,390 shares directly and 167,125 shares indirectly as trustee of an irrevocable trust.

Positive

  • None.

Negative

  • None.
Insider VINCIARELLI PATRIZIO
Role Chairman and CEO
Sold 20,000 shs ($5.59M)
Type Security Shares Price Value
Sale Common Stock 700 $269.5946 $189K
Sale Common Stock 494 $270.5367 $134K
Sale Common Stock 1,006 $271.7766 $273K
Sale Common Stock 1,419 $273.3742 $388K
Sale Common Stock 1,281 $274.2247 $351K
Sale Common Stock 3,487 $275.4633 $961K
Sale Common Stock 2,283 $276.4904 $631K
Sale Common Stock 1,580 $277.5508 $439K
Sale Common Stock 836 $278.3823 $233K
Sale Common Stock 593 $279.4171 $166K
Sale Common Stock 300 $280.5194 $84K
Sale Common Stock 1,000 $281.595 $282K
Sale Common Stock 200 $282.70 $57K
Sale Common Stock 300 $287.4972 $86K
Sale Common Stock 1,400 $288.6187 $404K
Sale Common Stock 700 $290.2092 $203K
Sale Common Stock 884 $291.6962 $258K
Sale Common Stock 800 $292.7613 $234K
Sale Common Stock 400 $293.80 $118K
Sale Common Stock 157 $299.0671 $47K
Sale Common Stock 180 $300.2933 $54K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 8,667,390 shares (Direct, null); Common Stock — 167,125 shares (Indirect, See footnote)
Footnotes (1)
  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. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $269.14 and $270.06. 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 (23) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $270.40 and $271.36. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $271.44 and $272.40. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $272.76 and $273.72. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $273.82 and $274.76. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $274.93 and $275.85. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $275.96 and $276.95. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $277.00 and $277.97. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $278.07 and $278.77. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $279.10 and $279.59. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $280.22 and $280.61. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $281.24 and $282.04. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $282.24 and $283.16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $287.01 and $288.00. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $288.32 and $288.82. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $289.99 and $290.57. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $291.41 and $292.06. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $292.45 and $293.05. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $293.69 and $293.92. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $298.98 and $299.22. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $300.21 and $300.36.
Shares sold 20,000 shares Total common stock sold on June 10, 2026
Low sale price range $269.14/share Lowest end of reported weighted-average price ranges
High sale price range $300.36/share Highest end of reported weighted-average price ranges
Direct holdings after sale 8,667,390 shares Common stock held directly after June 10, 2026 sales
Indirect trust holdings 167,125 shares Held as trustee of irrevocable trust dated 12/21/2012
Rule 10b5-1 plan adoption date February 26, 2026 Date CEO’s trading plan governing these sales was adopted
Sale transactions count 21 transactions Open-market sales coded “S” on June 10, 2026
Net buy/sell direction Net-sell 20,000 shares Transaction summary across all reported trades
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
"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.
indirect ownership financial
"These shares are held by the reporting person as Trustee of the Patrizio Vinciarelli Irrevocable Trust"
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Form 4 Insider Transactions: What Each Field Means →
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 and CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/10/2026		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 Stock06/10/2026S(2)700D$269.5946(3)8,667,390D
Common Stock06/10/2026S(2)494D$270.5367(4)8,666,896D
Common Stock06/10/2026S(2)1,006D$271.7766(5)8,665,890D
Common Stock06/10/2026S(2)1,419D$273.3742(6)8,664,471D
Common Stock06/10/2026S(2)1,281D$274.2247(7)8,663,190D
Common Stock06/10/2026S(2)3,487D$275.4633(8)8,659,703D
Common Stock06/10/2026S(2)2,283D$276.4904(9)8,657,420D
Common Stock06/10/2026S(2)1,580D$277.5508(10)8,655,840D
Common Stock06/10/2026S(2)836D$278.3823(11)8,655,004D
Common Stock06/10/2026S(2)593D$279.4171(12)8,654,411D
Common Stock06/10/2026S(2)300D$280.5194(13)8,654,111D
Common Stock06/10/2026S(2)1,000D$281.595(14)8,653,111D
Common Stock06/10/2026S(2)200D$282.7(15)8,652,911D
Common Stock06/10/2026S(2)300D$287.4972(16)8,652,611D
Common Stock06/10/2026S(2)1,400D$288.6187(17)8,651,211D
Common Stock06/10/2026S(2)700D$290.2092(18)8,650,511D
Common Stock06/10/2026S(2)884D$291.6962(19)8,649,627D
Common Stock06/10/2026S(2)800D$292.7613(20)8,648,827D
Common Stock06/10/2026S(2)400D$293.8(21)8,648,427D
Common Stock06/10/2026S(2)157D$299.0671(22)8,648,270D
Common Stock06/10/2026S(2)180D$300.2933(23)8,648,090D
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 $269.14 and $270.06. 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 (23) 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 $270.40 and $271.36.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $271.44 and $272.40.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $272.76 and $273.72.
7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $273.82 and $274.76.
8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $274.93 and $275.85.
9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $275.96 and $276.95.
10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $277.00 and $277.97.
11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $278.07 and $278.77.
12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $279.10 and $279.59.
13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $280.22 and $280.61.
14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $281.24 and $282.04.
15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $282.24 and $283.16.
16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $287.01 and $288.00.
17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $288.32 and $288.82.
18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $289.99 and $290.57.
19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $291.41 and $292.06.
20. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $292.45 and $293.05.
21. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $293.69 and $293.92.
22. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $298.98 and $299.22.
23. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $300.21 and $300.36.
/s/Quentin A. Fendelet. Attorney in fact for Patrizio Vinciarelli06/11/2026
** 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

FAQ

What did Vicor (VICR) CEO Patrizio Vinciarelli report in this Form 4?

He reported selling 20,000 shares of Vicor common stock in open-market transactions on June 10, 2026. These sales were executed at weighted average prices between about $269 and $300 per share under a pre-arranged Rule 10b5-1 plan.

At what prices did the Vicor (VICR) CEO sell his shares?

The reported sale prices ranged from about $269.14 to $300.36 per share. Each line shows a weighted average price, with detailed price ranges described in multiple footnotes covering narrower intervals within this overall band.

How many Vicor (VICR) shares does the CEO hold after these transactions?

After the reported sales, Patrizio Vinciarelli holds 8,667,390 Vicor common shares directly. He also has indirect ownership of 167,125 shares as trustee of an irrevocable trust established for the benefit of his child.

Was the Vicor (VICR) CEO’s stock sale part of a Rule 10b5-1 plan?

Yes. A footnote states the sale was effected under a Rule 10b5-1 trading plan adopted on February 26, 2026. Such plans preset trading instructions, making the timing of trades more routine rather than opportunistic.

How many total shares were sold by the Vicor (VICR) CEO in this filing?

The transaction summary shows 20,000 shares of Vicor common stock sold across 21 separate open-market transactions. All are coded as “S” sales, with no option exercises, gifts, or tax-withholding transactions reported.

What indirect holdings are disclosed for the Vicor (VICR) CEO?

The filing lists 167,125 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, with these holdings reported as indirect ownership.