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Vicor (VICR) CEO Vinciarelli 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 CORP Chairman & CEO Patrizio Vinciarelli reported open-market sales of 20,000 shares of common stock on June 18, 2026. The shares were sold in multiple transactions at weighted-average prices between $324.2950 and $340.1000 under a pre-arranged Rule 10b5-1 trading plan adopted on February 26, 2026.

Following these sales, he holds 8,547,490 VICOR CORP shares directly and 167,125 shares indirectly as trustee of an irrevocable trust established for the benefit of his child.

Positive

  • None.

Negative

  • None.
Insider VINCIARELLI PATRIZIO
Role Chairman & CEO
Sold 20,000 shs ($6.61M)
Type Security Shares Price Value
Sale Common Stock 600 $324.542 $195K
Sale Common Stock 1,412 $325.6308 $460K
Sale Common Stock 2,188 $326.8629 $715K
Sale Common Stock 1,800 $327.8856 $590K
Sale Common Stock 2,091 $329.7748 $690K
Sale Common Stock 2,978 $330.748 $985K
Sale Common Stock 2,731 $331.6731 $906K
Sale Common Stock 2,600 $332.8931 $866K
Sale Common Stock 1,300 $333.9592 $434K
Sale Common Stock 900 $334.7911 $301K
Sale Common Stock 800 $337.4775 $270K
Sale Common Stock 200 $338.32 $68K
Sale Common Stock 400 $340.075 $136K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 8,547,490 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 $324.2950 and $324.9300. 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 (15) 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 $325.3100 and $326.3000. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $326.4000 and $327.1700. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $327.5400 and $328.3800. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $329.1800 and $330.1700. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.1800 and $331.1500. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $331.3000 and $332.2500. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $332.3500 and $333.3000. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $333.4700 and $334.3900. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $334.5300 and $335.0800. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $337.3000 and $337.5500. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $338.3200 and $338.3200. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $340.0500 and $340.1000.
Shares sold 20,000 shares Total common stock sold on June 18, 2026
Sale price range $324.2950–$340.1000 Weighted-average price ranges across multiple transactions
Direct holdings after sale 8,547,490 shares Common stock held directly following the transactions
Indirect trust holdings 167,125 shares Shares held as trustee of irrevocable trust
Largest single block sold 2,978 shares One of several reported open-market sale blocks
Earliest weighted-average sale price $324.2950–$324.9300 Price range referenced in one footnote
Latest weighted-average sale price $340.0500–$340.1000 Highest price range referenced in footnotes
10b5-1 plan adoption date February 26, 2026 Date trading plan governing these sales was adopted
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""
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""
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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)
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)
06/18/2026		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 Stock06/18/2026S(2)600D$324.542(3)8,547,490D
Common Stock06/18/2026S(2)1,412D$325.6308(4)8,546,078D
Common Stock06/18/2026S(2)2,188D$326.8629(5)8,543,890D
Common Stock06/18/2026S(2)1,800D$327.8856(6)8,542,090D
Common Stock06/18/2026S(2)2,091D$329.7748(7)8,539,999D
Common Stock06/18/2026S(2)2,978D$330.748(8)8,537,021D
Common Stock06/18/2026S(2)2,731D$331.6731(9)8,534,290D
Common Stock06/18/2026S(2)2,600D$332.8931(10)8,531,690D
Common Stock06/18/2026S(2)1,300D$333.9592(11)8,530,390D
Common Stock06/18/2026S(2)900D$334.7911(12)8,529,490D
Common Stock06/18/2026S(2)800D$337.4775(13)8,528,690D
Common Stock06/18/2026S(2)200D$338.32(14)8,528,490D
Common Stock06/18/2026S(2)400D$340.075(15)8,528,090D
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 $324.2950 and $324.9300. 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 (15) 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 $325.3100 and $326.3000.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $326.4000 and $327.1700.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $327.5400 and $328.3800.
7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $329.1800 and $330.1700.
8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.1800 and $331.1500.
9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $331.3000 and $332.2500.
10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $332.3500 and $333.3000.
11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $333.4700 and $334.3900.
12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $334.5300 and $335.0800.
13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $337.3000 and $337.5500.
14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $338.3200 and $338.3200.
15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $340.0500 and $340.1000.
/s/Quentin A. Fendelet Attorney in Fact for Patrizio Vinciarelli06/22/2026
** 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 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 18, 2026. The sales were executed in multiple open-market transactions at weighted-average prices disclosed in the filing.

At what prices did Patrizio Vinciarelli sell VICOR CORP (VICR) shares?

The filing states that Patrizio Vinciarelli’s 20,000 VICOR CORP shares were sold at weighted-average prices between $324.2950 and $340.1000. These averages reflect multiple trades within narrower price ranges detailed in several individual footnotes.

How many VICOR CORP (VICR) shares does Patrizio Vinciarelli hold after this Form 4?

After the reported transactions, Patrizio Vinciarelli holds 8,547,490 VICOR CORP common shares directly. He also holds 167,125 additional shares indirectly as trustee of an irrevocable trust established for the benefit of his child.

Was the VICOR CORP (VICR) insider sale made under a Rule 10b5-1 plan?

Yes. A footnote explains the sale was effected under a Rule 10b5-1 trading plan adopted by Patrizio Vinciarelli on February 26, 2026. Such plans pre-schedule trades, reducing the role of discretionary timing decisions.

What is the role of the trust mentioned in the VICOR CORP (VICR) Form 4 filing?

The Form 4 notes that 167,125 shares are held 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 these shares are reported as indirect ownership.