Vicor (NASDAQ: VICR) VP Tuozzolo nets sale of 5,296 shares

Rhea-AI Filing Summary

Vicor Corp corporate vice president and director Claudio Tuozzolo reported a mix of option exercises and share sales. On February 24, 2026, he exercised two non-qualified stock options for 800 and 995 shares of common stock at exercise prices of $100.0000 and $60.3700 per share.

On the same date, he sold blocks of common stock totaling 3,501, 800, and 995 shares in open-market transactions at prices of $179.4404 and $179.4169 per share. After these transactions, Tuozzolo directly owned 25,652 shares of Vicor common stock.

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)
02/24/2026

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	02/24/2026		S		3,501	D	$179.4404	25,652	D
Common Stock	02/24/2026		M		800	A	$100	26,452	D
Common Stock	02/24/2026		S		800	D	$179.4169	25,652	D
Common Stock	02/24/2026		M		995	A	$60.37	26,647	D
Common Stock	02/24/2026		S		995	D	$179.4169	25,652	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
Non Qualified Stock Option	$100	02/24/2026		M			800	06/25/2025	06/25/2031	Common Stock	800	$0	200	D
Non Qualified Stock Option	$60.37	02/24/2026		M			995	06/24/2025	06/24/2032	Common Stock	995	$0	662	D

Explanation of Responses:

	/s/Quentin A. Fendelet. Attorney in fact for Claudio Tuozzolo	02/25/2026
	** 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 transactions did Claudio Tuozzolo report for VICR?

Claudio Tuozzolo reported exercising non-qualified stock options and selling Vicor common shares. He exercised options for 800 and 995 shares, then sold 3,501, 800, and 995 shares in open-market trades on February 24, 2026, at prices around $179 per share.

How many Vicor (VICR) shares did Tuozzolo sell in these transactions?

He sold 3,501, 800, and 995 Vicor common shares in separate open-market transactions. These sales occurred on February 24, 2026, at reported prices of $179.4404 and $179.4169 per share, according to the Form 4 insider trading disclosure filed for Vicor Corp.

What option exercises did the Vicor VP report on the Form 4?

The filing shows two non-qualified stock option exercises converting into Vicor common stock. Tuozzolo exercised options covering 800 shares at $100.0000 per share and 995 shares at $60.3700 per share, both on February 24, 2026, as part of his equity compensation activity.

What is Claudio Tuozzolo’s Vicor share ownership after these trades?

After completing the reported option exercises and share sales, Tuozzolo directly owned 25,652 shares of Vicor common stock. This post-transaction figure reflects all listed acquisitions and dispositions in the Form 4 filing as of the February 24, 2026 transaction date.

Were the Vicor insider share sales open-market transactions?

Yes, the sales were reported with code “S,” indicating open-market or private sale transactions. The Form 4 describes them as sales of Vicor common stock at prices of $179.4404 and $179.4169 per share, executed on February 24, 2026 by corporate vice president Claudio Tuozzolo.

What role does Claudio Tuozzolo hold at Vicor Corp (VICR)?

Claudio Tuozzolo is identified as both a director and an officer of Vicor Corp. His officer title in the Form 4 is “Corp. Vice President,” reflecting a senior leadership position with direct ownership of the reported Vicor common stock after the disclosed transactions.