Insider Tuozzolo trims Vicor (VICR) stake with 4,469-share open sale

Rhea-AI Filing Summary

Vicor Corp corporate vice president and director Claudio Tuozzolo reported an open-market sale of company stock. He sold 4,469 shares of Vicor common stock at a price of $174.6037 per share. After this transaction, he directly holds 29,153 shares of Vicor common stock.

Insider Trade Summary

Net Seller: 4,469 shares ($780,304)

Net Sell 1 txn

Insider Tuozzolo Claudio

Role Corp. Vice President

Sold 4,469 shs ($780K)

Type	Security	Shares	Price	Value
Sale	Common Stock	4,469	$174.6037	$780K

Holdings After Transaction: Common Stock — 29,153 shares (Direct)

Footnotes (1)

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^*

Tuozzolo Claudio

(Last) (First) (Middle)

25 FRONTAGE ROAD

(Street)

ANDOVER MA 01810

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
VICOR CORP [ vicr ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Corp. Vice President

3. Date of Earliest Transaction (Month/Day/Year)
02/23/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	02/23/2026		S		4,469	D	$174.6037	29,153	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/Quentin Fendelet Attorney in fact for Claudio Tuozzolo	02/24/2026
	** 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.

FAQ

What insider transaction did Claudio Tuozzolo report at VICR?

Claudio Tuozzolo reported selling Vicor common stock. As a corporate vice president and director, he disclosed an open-market sale of 4,469 shares of Vicor Corp common stock, as reflected in a Form 4 insider trading report.

How many Vicor (VICR) shares did Claudio Tuozzolo sell and at what price?

He sold 4,469 Vicor common shares at $174.6037 each. The Form 4 shows a single non-derivative transaction in common stock, executed as an open-market or private sale at that per-share price.

How many Vicor (VICR) shares does Claudio Tuozzolo own after this sale?

He directly owns 29,153 Vicor shares after the sale. The filing lists this post-transaction balance for his direct ownership of Vicor Corp common stock, following the 4,469-share disposal.

What type of transaction did the Vicor (VICR) Form 4 disclose?

The filing discloses an open-market sale of common stock. The transaction code is “S,” described as a sale in open market or private transaction, involving non-derivative Vicor common shares held directly.

What is Claudio Tuozzolo’s role at Vicor (VICR) mentioned in the Form 4?

He is a corporate vice president and director of Vicor. The insider data identifies him as both an officer, with the title “Corp. Vice President,” and a director of Vicor Corp, though not a ten percent owner.