Vicor (VICR) CEO Vinciarelli sells 20,000 shares in Rule 10b5-1 trades

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 30, 2026. The sales were executed in multiple transactions at weighted average prices reported around $354.45 to $382.37 per share.

Following these transactions, Vinciarelli directly holds 8,407,998 Vicor shares and indirectly holds 167,125 shares as trustee of the Patrizio Vinciarelli Irrevocable Trust established for the benefit of his child. The filing notes that the sales were made under a pre-arranged Rule 10b5-1 trading plan adopted on February 26, 2026, indicating the transactions were scheduled in advance rather than timed discretionarily.

Insider Trade Summary 10b5-1

Net Seller: 20,000 shares ($7,500,832)

Net Sell 18 txns

Insider VINCIARELLI PATRIZIO

Role Chairman & CEO

Sold 20,000 shs ($7.50M)

Type	Security	Shares	Price	Value
Sale	Common Stock	92	$354.45	$33K
Sale	Common Stock	108	$356.2191	$38K
Sale	Common Stock	600	$360.05	$216K
Sale	Common Stock	200	$363.69	$73K
Sale	Common Stock	200	$365.155	$73K
Sale	Common Stock	1,000	$369.258	$369K
Sale	Common Stock	1,800	$370.6174	$667K
Sale	Common Stock	2,000	$371.6648	$743K
Sale	Common Stock	1,855	$372.7793	$692K
Sale	Common Stock	1,245	$373.6135	$465K
Sale	Common Stock	1,100	$375.0936	$413K
Sale	Common Stock	200	$376.465	$75K
Sale	Common Stock	2,118	$378.3038	$801K
Sale	Common Stock	3,053	$379.2297	$1.16M
Sale	Common Stock	3,118	$379.9844	$1.18M
Sale	Common Stock	1,111	$381.1168	$423K
Sale	Common Stock	200	$382.275	$76K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 8,407,998 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 $354.4500 and $354.4500. 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 $355.6900 and $356.2900. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $360.0500 and $360.0500. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $363.6800 and $363.7000. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $365.1400 and $ 365.1700. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $369.0200 and $369.8400. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $370.0800 and $371.0000. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $371.3300 and $372.2800. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $372.4500 and $373.4400. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $373.4700 and $374.3300. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $374.5300 and $375.5100. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $376.4500 and $376.4800. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $377.7200 and $378.7100. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $378.7300 and $379.7200. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $379.7300 and $380.6400. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $380.7900 and $381.6500. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $382.1800 and $382.3700.

Key Figures

Shares sold: 20,000 shares Highest reported sale price: $382.37 per share Lowest reported sale price: $354.45 per share +4 more

7 metrics

Shares sold 20,000 shares Total open-market sales on June 30, 2026

Highest reported sale price $382.37 per share Weighted average price range from footnotes

Lowest reported sale price $354.45 per share Weighted average price range from footnotes

Direct holdings after transaction 8,407,998 shares Common stock directly owned after June 30, 2026 sales

Indirect trust holdings 167,125 shares Held as trustee of irrevocable trust for child

Rule 10b5-1 plan adoption date February 26, 2026 Plan governing the June 30, 2026 sales

Number of sale transactions 17 transactions Non-derivative open-market sales reported

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 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"

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

"direct_or_indirect: I, nature_of_ownership: See Footnote"

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/01/2026 - 10:37 AM Accepted by SEC EDGAR 07/01/2026 - 10:36 AM Learn about SEC filing dates

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).

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)

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)
06/30/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock								167,125	I	See Footnote(1)
Common Stock	06/30/2026		S(2)		92	D	$354.45(3)	8,407,998	D
Common Stock	06/30/2026		S(2)		108	D	$356.2191(4)	8,407,890	D
Common Stock	06/30/2026		S(2)		600	D	$360.05(5)	8,407,290	D
Common Stock	06/30/2026		S(2)		200	D	$363.69(6)	8,407,090	D
Common Stock	06/30/2026		S(2)		200	D	$365.155(7)	8,406,890	D
Common Stock	06/30/2026		S(2)		1,000	D	$369.258(8)	8,405,890	D
Common Stock	06/30/2026		S(2)		1,800	D	$370.6174(9)	8,404,090	D
Common Stock	06/30/2026		S(2)		2,000	D	$371.6648(10)	8,402,090	D
Common Stock	06/30/2026		S(2)		1,855	D	$372.7793(11)	8,400,235	D
Common Stock	06/30/2026		S(2)		1,245	D	$373.6135(12)	8,398,990	D
Common Stock	06/30/2026		S(2)		1,100	D	$375.0936(13)	8,397,890	D
Common Stock	06/30/2026		S(2)		200	D	$376.465(14)	8,397,690	D
Common Stock	06/30/2026		S(2)		2,118	D	$378.3038(15)	8,395,572	D
Common Stock	06/30/2026		S(2)		3,053	D	$379.2297(16)	8,392,519	D
Common Stock	06/30/2026		S(2)		3,118	D	$379.9844(17)	8,389,401	D
Common Stock	06/30/2026		S(2)		1,111	D	$381.1168(18)	8,388,290	D
Common Stock	06/30/2026		S(2)		200	D	$382.275(19)	8,388,090	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount 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 $354.4500 and $354.4500. 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 $355.6900 and $356.2900.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $360.0500 and $360.0500.

6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $363.6800 and $363.7000.

7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $365.1400 and $ 365.1700.

8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $369.0200 and $369.8400.

9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $370.0800 and $371.0000.

10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $371.3300 and $372.2800.

11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $372.4500 and $373.4400.

12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $373.4700 and $374.3300.

13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $374.5300 and $375.5100.

14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $376.4500 and $376.4800.

15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $377.7200 and $378.7100.

16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $378.7300 and $379.7200.

17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $379.7300 and $380.6400.

18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $380.7900 and $381.6500.

19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $382.1800 and $382.3700.

	/s/Quentin A. Fendelet Attorney in Fact for Patrizio Vinciarelli	07/01/2026
	** 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)

FAQ

What insider transaction did VICOR CORP (VICR) report for Patrizio Vinciarelli?

Vicor reported that Chairman and CEO Patrizio Vinciarelli sold 20,000 shares of common stock on June 30, 2026. The sales occurred in multiple open-market transactions at reported weighted average prices disclosed in the Form 4.

At what prices did the VICR insider shares sell on June 30, 2026?

The Form 4 reports weighted average sale prices for Vicor common stock ranging from about $354.45 to $382.37 per share. Individual trades occurred within narrower ranges detailed across multiple footnotes to the filing.

How many VICOR CORP shares does CEO Patrizio Vinciarelli hold after these sales?

After the reported June 30, 2026 transactions, Patrizio Vinciarelli directly holds 8,407,998 shares of Vicor common stock. He also indirectly holds 167,125 shares as trustee of an irrevocable trust established for the benefit of his child.

Were the June 30, 2026 VICR insider sales made under a Rule 10b5-1 plan?

Yes. A footnote states the June 30, 2026 sale activity was executed under a Rule 10b5-1 trading plan adopted by Patrizio Vinciarelli on February 26, 2026, indicating the transactions were pre-scheduled rather than newly initiated.

What does the trust-related holding in the VICR Form 4 represent?

The Form 4 shows 167,125 Vicor shares held indirectly 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, according to the filing footnote.