Insider Sean Crilly of Vicor (NASDAQ: VICR) sells 2,500 shares

Rhea-AI Filing Summary

VICOR CORP corporate VP of engineering Sean Crilly reported an open-market sale of 2,500 shares of Common Stock at an average price of $282.5173 per share. After this transaction, he directly holds 7,229 shares of Vicor common stock.

Insider Trade Summary

Net Seller: 2,500 shares ($706,293)

Net Sell 1 txn

Insider CRILLY SEAN

Role Corp. VP-Eng., Pwr Syst.

Sold 2,500 shs ($706K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,500	$282.5173	$706K

Holdings After Transaction: Common Stock — 7,229 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 2,500 shares Average sale price: $282.5173 per share Shares owned after sale: 7,229 shares

3 metrics

Shares sold 2,500 shares Open-market sale of Vicor Common Stock

Average sale price $282.5173 per share Price received for sold Vicor shares

Shares owned after sale 7,229 shares Direct Vicor holdings post-transaction

Key Terms

Common Stock, open-market sale, non-derivative, direct ownership

4 terms

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

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""

direct ownership financial

"ownership_type: "direct""

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Form 4 Insider Transactions: What Each Field Means →

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^*

CRILLY SEAN

(Last) (First) (Middle)

25 FRONTAGE RD.

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Corp. VP-Eng., Pwr Syst.

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/05/2026

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	06/05/2026		S		2,500	D	$282.5173	7,229	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:

	/s/Kemble D. Morrison Attorney in fact for Sean Crilly	06/08/2026
	** 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 VICR executive Sean Crilly report?

Sean Crilly, a corporate vice president at Vicor, reported an open-market sale of 2,500 shares of Common Stock. The transaction reflects a discretionary sale and does not involve option exercises, gifts, or tax-withholding entries in this particular filing.

At what price did Sean Crilly sell his VICR common shares?

Sean Crilly sold 2,500 Vicor Common Stock shares at an average price of $282.5173 per share. This price is the weighted average execution price reported for the open-market transaction on the stated transaction date in the Form 4 filing.

How many VICR shares does Sean Crilly own after this Form 4 sale?

Following the reported sale, Sean Crilly directly owns 7,229 shares of Vicor Common Stock. This post-transaction balance reflects his remaining direct holdings, as disclosed in the Form 4, and does not show any derivative positions in this filing.

What type of transaction is shown in Sean Crilly’s VICR Form 4?

The Form 4 reports a non-derivative transaction coded “S,” indicating a sale of Common Stock in an open-market or private transaction. It does not include option exercises, conversions, or other derivative security activities in the current disclosure.

Does Sean Crilly’s Form 4 for VICR include any derivative securities?

This Form 4 does not list any derivative security transactions for Sean Crilly. The derivative summary section is empty, indicating no option exercises, warrant conversions, or other derivative movements were reported alongside the common share sale.