Vicor (VICR) VP Tuozzolo exercises options, then sells 4,643 shares

Rhea-AI Filing Summary

Vicor Corp corporate vice president and director Claudio Tuozzolo exercised non-qualified stock options for 2,535 shares on February 25, 2026, receiving common stock at an exercise price of $69.04 per share. He then sold a total of 4,643 common shares in open-market transactions at prices up to $199.088 per share, and directly held 23,544 shares after these trades.

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)
02/25/2026

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	02/25/2026		M		2,271	A	$69.04	27,293	D
Common Stock	02/25/2026		S		2,271	D	$199.088	25,652	D
Common Stock	02/25/2026		M		264	A	$69.04	25,916	D
Common Stock	02/25/2026		S		264	D	$197.0198	25,652	D
Common Stock	02/25/2026		S		2,108	D	$196.6274	23,544	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	$69.04	02/25/2026		M			2,535	06/24/2025	06/24/2030	Common Stock	2,535	$0	0	D

Explanation of Responses:

	/s/Quentin Fendelet Attorney in fact for Claudio Tuozzolo	02/26/2026
	** 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 for 2,535 shares and selling 4,643 Vicor common shares. All transactions occurred on February 25, 2026, and involved direct ownership. These moves combined option exercises with open-market sales.

How many Vicor (VICR) shares did the insider sell and at what prices?

Claudio Tuozzolo sold 4,643 Vicor common shares in several open-market transactions. Reported sale prices per share included $199.0880, $197.0198, and $196.6274, reflecting sales at different price points on the same trading date, February 25, 2026.

How many Vicor (VICR) shares does Claudio Tuozzolo own after these trades?

After exercising options and selling shares, Claudio Tuozzolo directly owned 23,544 Vicor common shares. This post-transaction balance reflects his remaining direct holdings as of the February 25, 2026 Form 4 transactions reported in the filing data.

What type of derivative security did the Vicor insider exercise?

The insider exercised a non-qualified stock option covering 2,535 shares of Vicor common stock. This was reported with transaction code M, indicating an exercise or conversion of a derivative security into common stock on February 25, 2026.

Was the Vicor (VICR) insider transaction a net buy or net sell?

The disclosed activity represents a net sell. While options were exercised to acquire 2,535 shares, total reported sales of 4,643 shares exceeded acquisitions, resulting in a net reduction of directly held Vicor common stock on February 25, 2026.

What is Claudio Tuozzolo’s role at Vicor associated with this Form 4?

Claudio Tuozzolo is identified as both a director and a corporate vice president of Vicor. His dual roles indicate executive and board-level responsibilities, and these positions require reporting his Vicor share transactions on Form 4 as shown here.