Vicor CEO sells 700 shares under 10b5-1 plan

VICOR CORP Chairman and CEO Patrizio Vinciarelli sold a total of 700 shares of common stock in open-market transactions.

Rhea-AI Filing Summary

VICOR CORP Chairman and CEO Patrizio Vinciarelli sold a total of 700 shares of common stock in open-market transactions. On July 6, 2026, he sold 200 shares at a weighted average price of $303.3150 and 500 shares at a weighted average price of $302.0360.

The sales were effected under a Rule 10b5-1 trading plan adopted on February 26, 2026. After these transactions, Vinciarelli directly holds 8,347,390 shares of Vicor common stock and indirectly holds 167,125 shares as trustee of an irrevocable trust established for the benefit of his child.

Insider Trade Summary 10b5-1

Net Seller: 700 shares

Net Sell 3 txns

Insider VINCIARELLI PATRIZIO

Role Chairman & CEO

Sold 700 shs ($212K)

Type	Security	Shares	Price	Value
Sale	Common Stock	500	$302.036	$151K
Sale	Common Stock	200	$303.315	$61K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 8,347,390 shares (Direct); Common Stock — 167,125 shares (Indirect, See Footnote)

Footnotes (4)

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 $302.0000 and $302.1800. 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 (4) 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 $303.2100 and $303.4200.

Key Figures

Shares sold: 700 shares First sale size: 200 shares Second sale size: 500 shares +3 more

6 metrics

Shares sold 700 shares Total common stock sold July 6, 2026

First sale size 200 shares Open-market sale at weighted average $303.3150

Second sale size 500 shares Open-market sale at weighted average $302.0360

Direct holdings after 8,347,590 shares Common stock held directly following transactions

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

Rule 10b5-1 plan adoption date February 26, 2026 Plan governing July 6, 2026 sales

Key Terms

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

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.

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.

indirect ownership financial

"direct_or_indirect: "I", nature_of_ownership: "See Footnote""

FAQ

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

What insider transactions did VICR Chairman and CEO report on this Form 4?

VICOR CORP Chairman and CEO Patrizio Vinciarelli reported selling 700 shares of common stock. The Form 4 shows two open-market sales on July 6, 2026, comprising 200 shares at $303.3150 and 500 shares at $302.0360 per share.

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

The reported sales occurred at weighted average prices of $303.3150 and $302.0360 per share. Footnotes explain these were composed of multiple trades within narrow price ranges between $302.0000 and $303.4200 during July 6, 2026.

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

After the reported sales, Patrizio Vinciarelli holds 8,347,590 Vicor common shares directly. He also indirectly holds 167,125 shares as trustee of an irrevocable trust established for the benefit of his child, according to the Form 4 disclosure.

Were the July 6, 2026 VICR insider sales made under a Rule 10b5-1 plan?

Yes. A footnote states the July 6, 2026 sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Patrizio Vinciarelli on February 26, 2026. Such plans pre-schedule trades and can indicate routine portfolio management.

What does the indirect holding reported for Vicor (VICR) represent?

The Form 4 reports 167,125 shares held indirectly by Patrizio Vinciarelli as trustee of the Patrizio Vinciarelli Irrevocable Trust U/A dated December 21, 2012. This trust was established for the benefit of his child, according to the filing footnote.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 07/07/2026 - 10:04 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)
07/06/2026

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	07/06/2026		S(2)		500	D	$302.036(3)	8,347,590	D
Common Stock	07/06/2026		S(2)		200	D	$303.315(4)	8,347,390	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 $302.0000 and $302.1800. 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 (4) 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 $303.2100 and $303.4200.

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