At what prices did the Vicor (VICR) CEO’s 20,000-share sale occur?

The 20,000 shares were sold in numerous trades at weighted average prices within specified ranges. Footnotes show sale price ranges extending from $308.51 to $332.05 per share across different transaction groups on June 15, 2026.

Was the Vicor (VICR) CEO’s 20,000-share sale under a Rule 10b5-1 plan?

Yes. A footnote states the sale was effected pursuant to a Rule 10b5-1 trading plan. The plan was adopted by Patrizio Vinciarelli on February 26, 2026, indicating the trades were pre-arranged rather than timed discretionarily.

Does the Vicor (VICR) Form 4 include any indirect share holdings?

Yes. The Form 4 reports 167,125 Vicor shares held indirectly. These are held by Patrizio Vinciarelli as trustee of the Patrizio Vinciarelli Irrevocable Trust dated December 21, 2012, which was established for the benefit of his child.

Vicor (VICR) CEO trims stake with 20,000-share Rule 10b5-1 sale

Filing Impact

(Very High)

Filing Sentiment

(Very Negative)

Form Type

Rhea-AI Filing Summary

Vicor Corporation’s Chairman and CEO Patrizio Vinciarelli reported open-market sales of 20,000 shares of Vicor common stock on June 15, 2026. The shares were sold in multiple transactions at weighted average prices within ranges disclosed between about $308.51 and $332.05 per share.

According to the filing, these transactions were executed under a pre-arranged Rule 10b5-1 trading plan adopted on February 26, 2026. After the sales, Vinciarelli directly holds 8,607,490 shares of Vicor common stock and indirectly holds 167,125 shares as trustee of an irrevocable trust.

Insider Trade Summary 10b5-1

Net Seller: 20,000 shares ($6,372,972)

Net Sell 18 txns

Insider VINCIARELLI PATRIZIO

Role Chairman & CEO

Sold 20,000 shs ($6.37M)

Type	Security	Shares	Price	Value
Sale	Common Stock	600	$309.23	$186K
Sale	Common Stock	400	$309.605	$124K
Sale	Common Stock	755	$311.707	$235K
Sale	Common Stock	645	$312.8242	$202K
Sale	Common Stock	846	$314.375	$266K
Sale	Common Stock	954	$315.0559	$301K
Sale	Common Stock	1,703	$316.1758	$538K
Sale	Common Stock	2,297	$317.4637	$729K
Sale	Common Stock	2,000	$318.124	$636K
Sale	Common Stock	100	$318.83	$32K
Sale	Common Stock	2,510	$320.4428	$804K
Sale	Common Stock	3,990	$321.4479	$1.28M
Sale	Common Stock	1,800	$322.5761	$581K
Sale	Common Stock	400	$323.5075	$129K
Sale	Common Stock	600	$324.81	$195K
Sale	Common Stock	200	$330.05	$66K
Sale	Common Stock	200	$331.70	$66K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 8,607,490 shares (Direct, null); Common Stock — 167,125 shares (Indirect, See Footnote)

Footnotes (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 $308.5100 and $309.3400. 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $309.5100 and $309.7000. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $311.2000 and $312.1500. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $312.2350 and $312.9800. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $313.6900 and $314.6800. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $314.6900 and $315.5100. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $315.7800 and $316.7700. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $316.8200 and $317.8000. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $317.8300 and $318.7200. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $318.8300 and $318.8300. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $319.8900 and $320.8200. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $320.9500 and $321.8900. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $322.1900 and $323.1200. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $323.2400 and $323.7800. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $324.6300 and $324.9000. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.0500 and $330.0500. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $331.3500 and $332.0500.

Key Figures

Shares sold: 20,000 shares Highest individual reported sale price: $331.7000 per share Lowest price range value: $308.5100 per share +4 more

7 metrics

Shares sold 20,000 shares Total Vicor common shares sold on June 15, 2026

Highest individual reported sale price $331.7000 per share Open-market sale price for one transaction on June 15, 2026

Lowest price range value $308.5100 per share Lower end of a disclosed weighted-average price range

Highest price range value $332.0500 per share Upper end of a disclosed weighted-average price range

Direct holdings after sale 8,607,490 shares Vicor common stock directly owned after June 15, 2026 transactions

Indirect trust holdings 167,125 shares Shares held as trustee of an irrevocable trust

10b5-1 plan adoption date February 26, 2026 Date CEO adopted the Rule 10b5-1 trading plan

Key Terms

Rule 10b5-1 trading plan, weighted average price, Irrevocable Trust, open-market sale, +1 more

5 terms

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

"Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012, established for the benefit of the child"

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, Sale in open market or private transaction"

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 →

06/16/2026 - 04:28 PM

SEC Form 4

FORM 4

UNITED 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).

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)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	Chairman & CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/15/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock								167,125	I	See Footnote⁽¹⁾
Common Stock	06/15/2026		S⁽²⁾		600	D	$309.23⁽³⁾	8,607,490	D
Common Stock	06/15/2026		S⁽²⁾		400	D	$309.605⁽⁴⁾	8,607,090	D
Common Stock	06/15/2026		S⁽²⁾		755	D	$311.707⁽⁵⁾	8,606,335	D
Common Stock	06/15/2026		S⁽²⁾		645	D	$312.8242⁽⁶⁾	8,605,690	D
Common Stock	06/15/2026		S⁽²⁾		846	D	$314.375⁽⁷⁾	8,604,844	D
Common Stock	06/15/2026		S⁽²⁾		954	D	$315.0559⁽⁸⁾	8,603,890	D
Common Stock	06/15/2026		S⁽²⁾		1,703	D	$316.1758⁽⁹⁾	8,602,187	D
Common Stock	06/15/2026		S⁽²⁾		2,297	D	$317.4637⁽¹⁰⁾	8,599,890	D
Common Stock	06/15/2026		S⁽²⁾		2,000	D	$318.124⁽¹¹⁾	8,597,890	D
Common Stock	06/15/2026		S⁽²⁾		100	D	$318.83⁽¹²⁾	8,597,790	D
Common Stock	06/15/2026		S⁽²⁾		2,510	D	$320.4428⁽¹³⁾	8,595,280	D
Common Stock	06/15/2026		S⁽²⁾		3,990	D	$321.4479⁽¹⁴⁾	8,591,290	D
Common Stock	06/15/2026		S⁽²⁾		1,800	D	$322.5761⁽¹⁵⁾	8,589,490	D
Common Stock	06/15/2026		S⁽²⁾		400	D	$323.5075⁽¹⁶⁾	8,589,090	D
Common Stock	06/15/2026		S⁽²⁾		600	D	$324.81⁽¹⁷⁾	8,588,490	D
Common Stock	06/15/2026		S⁽²⁾		200	D	$330.05⁽¹⁸⁾	8,588,290	D
Common Stock	06/15/2026		S⁽²⁾		200	D	$331.7⁽¹⁹⁾	8,588,090	D

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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 $308.5100 and $309.3400. 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 $309.5100 and $309.7000.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $311.2000 and $312.1500.

6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $312.2350 and $312.9800.

7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $313.6900 and $314.6800.

8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $314.6900 and $315.5100.

9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $315.7800 and $316.7700.

10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $316.8200 and $317.8000.

11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $317.8300 and $318.7200.

12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $318.8300 and $318.8300.

13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $319.8900 and $320.8200.

14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $320.9500 and $321.8900.

15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $322.1900 and $323.1200.

16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $323.2400 and $323.7800.

17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $324.6300 and $324.9000.

18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.0500 and $330.0500.

19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $331.3500 and $332.0500.

	/s/Quentin A. Fendelet Attorney in fact for Patrizio Vinciarelli	06/16/2026
	** Signature of Reporting Person	Date
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?

Vicor CEO Patrizio Vinciarelli reported selling 20,000 shares of Vicor common stock on June 15, 2026. The filing shows multiple open-market transactions at weighted average prices across several ranges disclosed in the footnotes.

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

After the reported sales, Patrizio Vinciarelli directly holds 8,607,490 shares of Vicor common stock. He also indirectly holds 167,125 shares as trustee of the Patrizio Vinciarelli Irrevocable Trust established for the benefit of his child.

How many separate sale transactions does the Vicor (VICR) Form 4 show?

The filing lists 17 separate non-derivative sale entries, all coded as open-market or private sales of common stock. Together they total 20,000 shares sold, with one additional line reflecting an indirect holding entry for trust-owned shares.