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

Yes. A footnote states the 20,000-share sale was effected under a Rule 10b5-1 trading plan adopted by CEO Patrizio Vinciarelli on February 26, 2026. Such plans pre-arrange trades, making them more routine and less about short-term market timing.

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

Filing Impact

(Very High)

Filing Sentiment

(Very Negative)

Form Type

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 12, 2026. The trades were executed in multiple transactions at weighted average prices ranging from $295.97 to $309.33, under a Rule 10b5-1 trading plan adopted on February 26, 2026.

After these sales, Vinciarelli directly holds 8,627,689 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.

Insights

Vicor’s CEO made a pre-planned, modest open-market share sale.

Patrizio Vinciarelli, Vicor’s Chairman, CEO, and 10% owner, sold 20,000 shares of common stock in open-market transactions on June 12, 2026. Sale prices, reported as weighted averages, ranged between $295.97 and $309.33 across several trade increments.

The filing states the transactions were executed under a Rule 10b5-1 trading plan adopted on February 26, 2026, indicating they were pre-arranged rather than opportunistic. Following the sales, Vinciarelli still directly owns 8,627,689 shares and indirectly holds 167,125 shares as trustee of an irrevocable trust, so the sale represents a small part of his overall position.

Insider Trade Summary 10b5-1

Net Seller: 20,000 shares ($6,097,443)

Net Sell 14 txns

Insider VINCIARELLI PATRIZIO

Role Chairman & CEO

Sold 20,000 shs ($6.10M)

Type	Security	Shares	Price	Value
Sale	Common Stock	401	$296.1176	$119K
Sale	Common Stock	99	$297.18	$29K
Sale	Common Stock	279	$299.0075	$83K
Sale	Common Stock	797	$299.884	$239K
Sale	Common Stock	944	$300.9437	$284K
Sale	Common Stock	589	$302.1446	$178K
Sale	Common Stock	4,716	$303.5916	$1.43M
Sale	Common Stock	1,591	$304.4692	$484K
Sale	Common Stock	2,252	$305.349	$688K
Sale	Common Stock	3,382	$306.369	$1.04M
Sale	Common Stock	2,443	$307.4799	$751K
Sale	Common Stock	1,707	$308.3358	$526K
Sale	Common Stock	800	$309.1963	$247K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 8,627,689 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 $295.97 and $296.72. 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 (15) 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 $297.18 and $297.18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $298.46 and $299.43. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $299.53 and $300.51. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $300.61 and $301.51. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $301.745 and $302.67. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $302.89 and $303.87. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $303.92 and $304.86. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $304.93 and $305.92. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $305.93 and $306.915. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $307.00 and $307.99. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $308.00 and $308.82. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $309.01 and $309.33.

Key Figures

Shares sold: 20,000 shares Sale price range: $295.97–$309.33 per share Direct holdings after sale: 8,627,689 shares +3 more

6 metrics

Shares sold 20,000 shares Total common shares sold on June 12, 2026

Sale price range $295.97–$309.33 per share Weighted average price ranges from footnotes

Direct holdings after sale 8,627,689 shares Common stock directly owned following transactions

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

Number of sale entries 13 entries Separate open-market sale lines reported in Form 4

Trading plan adoption date February 26, 2026 Date Rule 10b5-1 trading plan was adopted

Key Terms

Rule 10b5-1 trading plan, weighted average price, irrevocable trust, open-market sale

4 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."

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

"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" for non-derivative common stock transactions"

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.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google

Form 4 Insider Transactions: What Each Field Means →

06/16/2026 - 01:35 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)
06/12/2026

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	06/12/2026		S⁽²⁾		401	D	$296.1176⁽³⁾	8,627,689	D
Common Stock	06/12/2026		S⁽²⁾		99	D	$297.18⁽⁴⁾	8,627,590	D
Common Stock	06/12/2026		S⁽²⁾		279	D	$299.0075⁽⁵⁾	8,627,311	D
Common Stock	06/12/2026		S⁽²⁾		797	D	$299.884⁽⁶⁾	8,626,514	D
Common Stock	06/12/2026		S⁽²⁾		944	D	$300.9437⁽⁷⁾	8,625,570	D
Common Stock	06/12/2026		S⁽²⁾		589	D	$302.1446⁽⁸⁾	8,624,981	D
Common Stock	06/12/2026		S⁽²⁾		4,716	D	$303.5916⁽⁹⁾	8,620,265	D
Common Stock	06/12/2026		S⁽²⁾		1,591	D	$304.4692⁽¹⁰⁾	8,618,674	D
Common Stock	06/12/2026		S⁽²⁾		2,252	D	$305.349⁽¹¹⁾	8,616,422	D
Common Stock	06/12/2026		S⁽²⁾		3,382	D	$306.369⁽¹²⁾	8,613,040	D
Common Stock	06/12/2026		S⁽²⁾		2,443	D	$307.4799⁽¹³⁾	8,610,597	D
Common Stock	06/12/2026		S⁽²⁾		1,707	D	$308.3358⁽¹⁴⁾	8,608,890	D
Common Stock	06/12/2026		S⁽²⁾		800	D	$309.1963⁽¹⁵⁾	8,608,090	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 $295.97 and $296.72. 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 (15) 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 $297.18 and $297.18.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $298.46 and $299.43.

6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $299.53 and $300.51.

7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $300.61 and $301.51.

8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $301.745 and $302.67.

9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $302.89 and $303.87.

10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $303.92 and $304.86.

11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $304.93 and $305.92.

12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $305.93 and $306.915.

13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $307.00 and $307.99.

14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $308.00 and $308.82.

15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $309.01 and $309.33.

	/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 insider transaction did Vicor (VICR) report for CEO Patrizio Vinciarelli?

Vicor reported that CEO Patrizio Vinciarelli sold 20,000 shares of common stock in open-market transactions on June 12, 2026. The filing shows multiple trades executed that day at weighted average prices between $295.97 and $309.33 per share.

At what prices did the Vicor (VICR) CEO sell his shares on June 12, 2026?

The CEO’s Form 4 reports weighted average sale prices between $295.97 and $309.33 per share. Individual trades within this range were grouped, and the filing notes that detailed breakdowns of shares sold at each price are available upon request from Vicor or the SEC staff.

How many Vicor (VICR) shares does CEO Patrizio Vinciarelli own after this Form 4?

After the reported transactions, the CEO directly owns 8,627,689 shares of Vicor common stock. He also indirectly holds 167,125 shares as trustee of the Patrizio Vinciarelli Irrevocable Trust, which was established for the benefit of his child, according to the filing footnotes.

What does the irrevocable trust holding mean in the Vicor (VICR) Form 4 filing?

The filing explains that 167,125 shares are held by CEO Patrizio Vinciarelli as trustee of an irrevocable trust created for his child’s benefit. This indicates those shares are owned through a trust structure, with Vinciarelli acting in a trustee capacity rather than holding them directly.

How many individual sale entries are reported in the Vicor (VICR) CEO’s Form 4?

The Form 4 lists 13 separate open-market sale entries, collectively totaling 20,000 shares sold. Each entry has its own weighted average price, and additional footnotes describe narrower price ranges for the grouped trades within those reported averages on June 12, 2026.