Vicor (VICR) CEO sells 20,000 shares in pre-set 10b5-1 trading plan

Q: At what prices did VICR’s CEO sell the 20,000 shares of Vicor stock?

The 20,000 shares were sold at weighted average prices from roughly $351.38 to $368.80 . Each line item reflects a weighted average, with detailed price ranges for individual trades provided across multiple footnotes in the Form 4.

Q: Were the June 22, 2026 Vicor (VICR) insider sales made under a Rule 10b5-1 plan?

Yes. A Form 4 footnote states the 20,000-share sale was effected pursuant to a Rule 10b5-1 trading plan . The filing specifies this plan was adopted by the reporting person on February 26, 2026 before the disclosed transactions.

Q: What is the indirect VICR ownership reported by Vicor’s CEO on this Form 4?

The Form 4 shows 167,125 shares of Vicor common stock held indirectly. These shares are held by Patrizio Vinciarelli as trustee of the Patrizio Vinciarelli Irrevocable Trust , established for the benefit of his child, as described in the filing’s footnotes.

Filing Impact

(Very High)

Filing Sentiment

(Very Negative)

Form Type

Rhea-AI Filing Summary

Vicor Corp Chairman and CEO Patrizio Vinciarelli, a more than 10% owner, reported open-market sales of 20,000 shares of common stock on June 22, 2026. The shares were sold in multiple transactions at weighted average prices generally between $351.38 and $368.80. Following these sales, he directly holds 8,527,890 shares and indirectly holds 167,125 shares as trustee of an irrevocable trust. The sales were executed under a pre-established Rule 10b5-1 trading plan adopted on February 26, 2026.

Insider Trade Summary 10b5-1

Net Seller: 20,000 shares ($7,218,826)

Net Sell 17 txns

Insider VINCIARELLI PATRIZIO

Role Chairman & CEO

Sold 20,000 shs ($7.22M)

Type	Security	Shares	Price	Value
Sale	Common Stock	200	$351.715	$70K
Sale	Common Stock	600	$354.0839	$212K
Sale	Common Stock	918	$355.3335	$326K
Sale	Common Stock	1,382	$356.3089	$492K
Sale	Common Stock	2,728	$357.4633	$975K
Sale	Common Stock	872	$358.8851	$313K
Sale	Common Stock	900	$359.5289	$324K
Sale	Common Stock	1,589	$360.5388	$573K
Sale	Common Stock	1,988	$361.7277	$719K
Sale	Common Stock	2,613	$362.6652	$948K
Sale	Common Stock	2,140	$363.5932	$778K
Sale	Common Stock	2,260	$364.5963	$824K
Sale	Common Stock	416	$365.6317	$152K
Sale	Common Stock	799	$366.7377	$293K
Sale	Common Stock	495	$367.6685	$182K
Sale	Common Stock	100	$368.80	$37K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 8,527,890 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 $351.3800 and $352.0500. 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 (18) 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 $353.8400 and $354.3500. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $354.9500 and $355.9000. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $355.9600 and $356.7000. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $357.0000 and $357.9700. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $358.1400 and $359.0900. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $359.1400 and $359.9800. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $360.1800 and $361.1700. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $361.1900 and $362.1800. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $362.1900 and $363.1600. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $363.2200 and $364.2100. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $364.2200 and $365.2100. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $365.2400 and $366.2200. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $366.2900 and $367.2500. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $367.3600 and $368.2100. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $368.8000 and $368.8000.

Key Figures

Shares sold: 20,000 shares Direct holdings after sale: 8,527,890 shares Indirect holdings: 167,125 shares +4 more

7 metrics

Shares sold 20,000 shares Common stock sold on June 22, 2026

Direct holdings after sale 8,527,890 shares Common stock directly held following transactions

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

Number of sale transactions 16 sales Non-derivative open-market sales with code “S”

Net share change -20,000 shares Net buy/sell shares in transaction summary

Price range (low) $351.38 Lowest price range cited in weighted average footnotes

Price range (high) $368.80 Highest price range cited in weighted average footnotes

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.

non-derivative financial

"transaction_type": "non-derivative""

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/24/2026 - 01:51 PM Accepted by SEC EDGAR 06/24/2026 - 01:51 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)

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)
06/22/2026

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	06/22/2026		S⁽²⁾		200	D	$351.715⁽³⁾	8,527,890	D
Common Stock	06/22/2026		S⁽²⁾		600	D	$354.0839⁽⁴⁾	8,527,290	D
Common Stock	06/22/2026		S⁽²⁾		918	D	$355.3335⁽⁵⁾	8,526,372	D
Common Stock	06/22/2026		S⁽²⁾		1,382	D	$356.3089⁽⁶⁾	8,524,990	D
Common Stock	06/22/2026		S⁽²⁾		2,728	D	$357.4633⁽⁷⁾	8,522,262	D
Common Stock	06/22/2026		S⁽²⁾		872	D	$358.8851⁽⁸⁾	8,521,390	D
Common Stock	06/22/2026		S⁽²⁾		900	D	$359.5289⁽⁹⁾	8,520,490	D
Common Stock	06/22/2026		S⁽²⁾		1,589	D	$360.5388⁽¹⁰⁾	8,518,901	D
Common Stock	06/22/2026		S⁽²⁾		1,988	D	$361.7277⁽¹¹⁾	8,516,913	D
Common Stock	06/22/2026		S⁽²⁾		2,613	D	$362.6652⁽¹²⁾	8,514,300	D
Common Stock	06/22/2026		S⁽²⁾		2,140	D	$363.5932⁽¹³⁾	8,512,160	D
Common Stock	06/22/2026		S⁽²⁾		2,260	D	$364.5963⁽¹⁴⁾	8,509,900	D
Common Stock	06/22/2026		S⁽²⁾		416	D	$365.6317⁽¹⁵⁾	8,509,484	D
Common Stock	06/22/2026		S⁽²⁾		799	D	$366.7377⁽¹⁶⁾	8,508,685	D
Common Stock	06/22/2026		S⁽²⁾		495	D	$367.6685⁽¹⁷⁾	8,508,190	D
Common Stock	06/22/2026		S⁽²⁾		100	D	$368.8⁽¹⁸⁾	8,508,090	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 $351.3800 and $352.0500. 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 (18) 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 $353.8400 and $354.3500.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $354.9500 and $355.9000.

6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $355.9600 and $356.7000.

7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $357.0000 and $357.9700.

8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $358.1400 and $359.0900.

9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $359.1400 and $359.9800.

10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $360.1800 and $361.1700.

11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $361.1900 and $362.1800.

12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $362.1900 and $363.1600.

13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $363.2200 and $364.2100.

14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $364.2200 and $365.2100.

15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $365.2400 and $366.2200.

16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $366.2900 and $367.2500.

17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $367.3600 and $368.2100.

18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $368.8000 and $368.8000.

	/s/Quentin A. Fendelet Attorney in Fact for Patrizio Vinciarelli	06/24/2026
	** 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 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 in open-market transactions. These sales occurred on June 22, 2026 at various weighted average prices disclosed in the Form 4 footnotes.

At what prices did VICR’s CEO sell the 20,000 shares of Vicor stock?

The 20,000 shares were sold at weighted average prices from roughly $351.38 to $368.80. Each line item reflects a weighted average, with detailed price ranges for individual trades provided across multiple footnotes in the Form 4.

How many VICR shares does Patrizio Vinciarelli hold after the reported sales?

After the transactions, Patrizio Vinciarelli directly holds 8,527,890 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, according to the Form 4 disclosure.

Were the June 22, 2026 Vicor (VICR) insider sales made under a Rule 10b5-1 plan?

Yes. A Form 4 footnote states the 20,000-share sale was effected pursuant to a Rule 10b5-1 trading plan. The filing specifies this plan was adopted by the reporting person on February 26, 2026 before the disclosed transactions.

What is the indirect VICR ownership reported by Vicor’s CEO on this Form 4?

The Form 4 shows 167,125 shares of Vicor common stock held indirectly. These shares are held by Patrizio Vinciarelli as trustee of the Patrizio Vinciarelli Irrevocable Trust, established for the benefit of his child, as described in the filing’s footnotes.

How many separate sale transactions did VICR’s CEO execute on June 22, 2026?

According to the transaction summary, there were 16 separate sale entries classified as non-derivative open-market transactions. Combined, these sales total 20,000 shares of Vicor common stock and are all reported with code “S” on the Form 4.