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Vicor CEO Patrizio Vinciarelli sells 20,000 shares

Weighted-average prices reported for individual sale groups ranged from $307.0155 to $330.0000 per share.

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Form Type
4

Rhea-AI Filing Summary

Vicor Corp (VICR) Chairman & CEO Patrizio Vinciarelli sold 20,000 shares of common stock in 17 direct transactions on October 1, 2026. The sales were effected under a Rule 10b5-1 trading plan adopted February 26, 2026. A separate indirect position reported on October 1, 2026 lists 167,125 shares held by Vinciarelli as trustee of the Patrizio Vinciarelli Irrevocable Trust U/A dated December 21, 2012, established for the benefit of his child.

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Insider VINCIARELLI PATRIZIO
Role Chairman & CEO
Sold 20,000 shs ($6.32M)
Type Security Shares Price Value
Sale Common Stock F2, F3 1,300 $307.0155 $399K
Sale Common Stock F2, F4 2,300 $308.2352 $709K
Sale Common Stock F2, F5 1,600 $308.7894 $494K
Sale Common Stock F2, F6 300 $311.2321 $93K
Sale Common Stock F2, F7 400 $311.805 $125K
Sale Common Stock F2, F8 500 $313.754 $157K
Sale Common Stock F2, F9 700 $314.7057 $220K
Sale Common Stock F2, F10 1,300 $315.7777 $411K
Sale Common Stock F2, F11 2,100 $316.8586 $665K
Sale Common Stock F2, F12 2,400 $318.0523 $763K
Sale Common Stock F2, F13 1,700 $319.0071 $542K
Sale Common Stock F2, F14 1,800 $320.0972 $576K
Sale Common Stock F2, F15 1,100 $321.5673 $354K
Sale Common Stock F2, F16 900 $322.3967 $290K
Sale Common Stock F2, F17 600 $323.3717 $194K
Sale Common Stock F2, F18 100 $324.98 $32K
Sale Common Stock F2, F19 900 $330.00 $297K
holding Common Stock F1 -- -- --
Holdings After Transaction: Common Stock — 8,327,390 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 $306.4900 and $307.4800. 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 $307.4900 and $308.4500.
  5. F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $308.5600 and $309.3200.
  6. F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $310.6000 and $311.5500.
  7. F7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $311.6200 and $311.8900.
  8. F8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $313.2300 and $314.1100.
  9. F9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $314.2300 and $315.1600.
  10. F10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $315.2700 and $316.2000.
  11. F11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $316.4200 and $317.2500.
  12. F12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $317.5100 and $318.4800.
  13. F13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $318.5800 and $319.3000.
  14. F14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $319.6500 and $320.6400.
  15. F15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $320.7700 and $321.7200.
  16. F16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $321.9900 and $322.8900.
  17. F17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $323.0100 and $323.8400.
  18. F18. 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 $324.9800.
  19. F19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.0000 and $330.0000.
Common shares sold 20,000 shares 17 direct transactions on October 1, 2026
Reported weighted-average sale price $307.0155 per share 1,300-share transaction on October 1, 2026
Reported weighted-average sale price $330.0000 per share 900-share transaction on October 1, 2026
Indirect trust holding 167,125 shares Held by Patrizio Vinciarelli as trustee for the benefit of his child
Rule 10b5-1 trading plan regulatory
"sale was effected pursuant to a Rule 10b5-1 trading plan"
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
"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.

FAQ

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

How many VICR shares did Chairman & CEO Patrizio Vinciarelli sell?
Patrizio Vinciarelli sold 20,000 VICR common shares in 17 direct transactions on October 1, 2026. The sales were made under a Rule 10b5-1 trading plan adopted on February 26, 2026.

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)
10/01/2026		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 Stock10/01/202610/01/2026S(2)1,300D$307.0155(3)8,346,090D
Common Stock10/01/202610/01/2026S(2)2,300D$308.2352(4)8,343,790D
Common Stock10/01/202610/01/2026S(2)1,600D$308.7894(5)8,342,190D
Common Stock10/01/202610/01/2026S(2)300D$311.2321(6)8,341,890D
Common Stock10/01/202610/01/2026S(2)400D$311.805(7)8,341,490D
Common Stock10/01/202610/01/2026S(2)500D$313.754(8)8,340,990D
Common Stock10/01/202610/01/2026S(2)700D$314.7057(9)8,340,290D
Common Stock10/01/202610/01/2026S(2)1,300D$315.7777(10)8,338,990D
Common Stock10/01/202610/01/2026S(2)2,100D$316.8586(11)8,336,890D
Common Stock10/01/202610/01/2026S(2)2,400D$318.0523(12)8,334,490D
Common Stock10/01/202610/01/2026S(2)1,700D$319.0071(13)8,332,790D
Common Stock10/01/202610/01/2026S(2)1,800D$320.0972(14)8,330,990D
Common Stock10/01/202610/01/2026S(2)1,100D$321.5673(15)8,329,890D
Common Stock10/01/202610/01/2026S(2)900D$322.3967(16)8,328,990D
Common Stock10/01/202610/01/2026S(2)600D$323.3717(17)8,328,390D
Common Stock10/01/202610/01/2026S(2)100D$324.98(18)8,328,290D
Common Stock10/01/202610/01/2026S(2)900D$330(19)8,327,390D
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 $306.4900 and $307.4800. 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 $307.4900 and $308.4500.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $308.5600 and $309.3200.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $310.6000 and $311.5500.
7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $311.6200 and $311.8900.
8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $313.2300 and $314.1100.
9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $314.2300 and $315.1600.
10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $315.2700 and $316.2000.
11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $316.4200 and $317.2500.
12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $317.5100 and $318.4800.
13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $318.5800 and $319.3000.
14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $319.6500 and $320.6400.
15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $320.7700 and $321.7200.
16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $321.9900 and $322.8900.
17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $323.0100 and $323.8400.
18. 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 $324.9800.
19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.0000 and $330.0000.
/s/Quentin A. Fendelet Attorney in Fact for Patrizio Vinciarelli10/05/2026
** 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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