Vicor VP sells 3,000 shares after option exercise

Vicor Corp corporate vice president Claudio Tuozzolo reported an exercise-and-sell transaction in company stock.

Rhea-AI Filing Summary

Vicor Corp corporate vice president Claudio Tuozzolo reported an exercise-and-sell transaction in company stock. He exercised options to acquire 3,000 shares of common stock at $33.96 per share, then sold 3,000 common shares in an open-market transaction at $328.413 per share on May 26, 2026. Following these transactions, he directly holds 13,240 shares of common stock and 26,913 non-qualified stock options granted under Vicor’s Amended and Restated 2000 Stock Option and Incentive Plan, which vest over a five-year period and expire two years after each vesting date.

Insider Trade Summary

Exercise and Sale: 3,000 shares ($883K approx. pre-tax spread)

Exercise and Sale 3 txns

Insider Tuozzolo Claudio

Role Corp. Vice President

Sold 3,000 shs ($985K)

Approx. gross sale proceeds $985K

Approx. exercise cost $102K

Approx. pre-tax spread $883K

Type	Security	Shares	Price	Value
Exercise	Non Qualified Stock Option	3,000	$0.00	$0.00
Exercise	Common Stock	3,000	$33.96	$102K
Sale	Common Stock	3,000	$328.413	$985K

Holdings After Transaction: Non Qualified Stock Option — 26,913 contracts (Direct); Common Stock — 13,240 shares (Direct)

Footnotes (2)

1. F1. Granted under the Companys Amended and Restated 2000 Stock Option and Incentive Plan on May 3, 2024 and vest over a five year period.
2. F2. Options expire two years from each vest date.

Key Figures

Shares sold: 3,000 shares Sale price per share: $328.413/share Options exercised: 3,000 shares +3 more

6 metrics

Shares sold 3,000 shares Open-market sale of common stock on May 26, 2026

Sale price per share $328.413/share Open-market sale of Vicor common stock

Options exercised 3,000 shares Exercise of non-qualified stock options into common stock

Option exercise price $33.96/share Exercise price for non-qualified stock options

Common shares held after 13,240 shares Direct holdings after transactions on May 26, 2026

Options remaining 26,913 options Non-qualified stock options outstanding after exercise

Key Terms

Non Qualified Stock Option, derivative exercise/conversion, open-market sale, Amended and Restated 2000 Stock Option and Incentive Plan, +1 more

5 terms

Non Qualified Stock Option financial

"security_title: "Non Qualified Stock Option""

derivative exercise/conversion financial

"transaction_action: "derivative exercise/conversion""

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.

Amended and Restated 2000 Stock Option and Incentive Plan financial

"Granted under the Companys Amended and Restated 2000 Stock Option and Incentive Plan"

vesting financial

"and vest over a five year period."

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Vicor (VICR) executive Claudio Tuozzolo report?

Claudio Tuozzolo reported an exercise-and-sell transaction involving Vicor common stock. He exercised options for 3,000 shares, then sold 3,000 shares in an open-market trade on May 26, 2026, according to the Form 4 filing.

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

He sold 3,000 shares of Vicor common stock in an open-market transaction. The reported sale price was approximately $328.413 per share on May 26, 2026, as disclosed in the Form 4 insider transaction report.

At what price did Claudio Tuozzolo exercise his Vicor (VICR) stock options?

He exercised non-qualified stock options to acquire 3,000 Vicor common shares at an exercise price of $33.96 per share. These options were granted under Vicor’s Amended and Restated 2000 Stock Option and Incentive Plan.

How many Vicor (VICR) shares does Claudio Tuozzolo own after this Form 4 transaction?

Following the reported transactions, Claudio Tuozzolo directly holds 13,240 shares of Vicor common stock. This post-transaction holding reflects the net result after exercising options and selling 3,000 shares on May 26, 2026.

What Vicor (VICR) stock options remain for Claudio Tuozzolo after the exercise?

After exercising 3,000 options, he holds 26,913 non-qualified stock options. These options were granted under Vicor’s Amended and Restated 2000 Stock Option and Incentive Plan, vest over five years, and expire two years after each vesting date.

What type of insider transaction code appears in this Vicor (VICR) Form 4?

The Form 4 shows an “S” code for an open-market sale of common stock and “M” codes for derivative option exercises. The “M” transactions reflect exercising non-qualified stock options into Vicor common shares before the reported sale.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/28/2026 - 12:37 PM Learn about SEC filing dates

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/26/2026

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	05/26/2026		M		3,000	A	$33.96	16,240	D
Common Stock	05/26/2026		S		3,000	D	$328.413	13,240	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	$33.96	05/26/2026		M			3,000	(1)	(2)	Common Stock	3,000	$0	26,913	D

Explanation of Responses:

1. Granted under the Companys Amended and Restated 2000 Stock Option and Incentive Plan on May 3, 2024 and vest over a five year period.

2. Options expire two years from each vest date.

	/s/Quentin A. Fendelet Attorney in fact for Claudio Tuozzolo	05/28/2026
	** 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)