Vicor VP granted 5,187 stock options

VICOR CORP corporate vice president Claudio Tuozzolo received a grant of 5,187 non-qualified stock options on common stock at an exercise price of $266.005 per share.

Rhea-AI Filing Summary

VICOR CORP corporate vice president Claudio Tuozzolo received a grant of 5,187 non-qualified stock options on common stock at an exercise price of $266.005 per share. The options were granted under the company’s Amended and Restated 2000 Stock Option and Incentive Plan, vest over five years, and expire two years from each vesting date. Following these transactions, he directly owns 13,240 shares of common stock and holds 5,187 options on the same number of underlying shares.

Insider Trade Summary

Grant/Award: 5,187 shares

Grant/Award 2 txns

Insider Tuozzolo Claudio

Role Corp. Vice President

Type	Security	Shares	Price	Value
Grant/Award	Non Qualified Stock Option	5,187	$0.00	$0.00
holding	Common Stock	--	--	--

Holdings After Transaction: Non Qualified Stock Option — 5,187 contracts (Direct); Common Stock — 13,240 shares (Direct)

Footnotes (2)

1. F1. Granted under the Company's Amended and Restated 2000 Stock Option and Incentive Plan on May 5, 2026 and vest over a five year period.
2. F2. Options expire 2 years from each date of vesting.

Key Figures

Option grant size: 5,187 options Exercise price: $266.005 per share Shares owned after: 13,240 shares +3 more

6 metrics

Option grant size 5,187 options Non-qualified stock options granted on May 5, 2026

Exercise price $266.005 per share Exercise price for the 5,187 non-qualified stock options

Shares owned after 13,240 shares Common stock directly owned following reported transactions

Underlying shares 5,187 shares Common shares underlying the new non-qualified stock options

Vesting period Five years Options vest over a five-year period from grant

Post-vesting expiry Two years Options expire two years from each vesting date

Key Terms

Non Qualified Stock Option, Amended and Restated 2000 Stock Option and Incentive Plan, vest over a five year period, Options expire 2 years from each date of vesting

4 terms

Non Qualified Stock Option financial

"security_title: "Non Qualified Stock Option""

Amended and Restated 2000 Stock Option and Incentive Plan financial

"Granted under the Company's Amended and Restated 2000 Stock Option and Incentive Plan on May 5, 2026"

vest over a five year period financial

"and vest over a five year period."

Options expire 2 years from each date of vesting financial

"Options expire 2 years from each date of vesting."

FAQ

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

What insider transaction did VICOR CORP (VICR) report for Claudio Tuozzolo?

VICOR CORP reported that corporate vice president Claudio Tuozzolo received a grant of 5,187 non-qualified stock options. These options give him the right to buy VICOR common stock under the company’s stock option and incentive plan, subject to vesting and expiration terms.

What are the key terms of Claudio Tuozzolo’s new VICR stock option grant?

The grant covers 5,187 non-qualified stock options with an exercise price of $266.005 per share. The options vest over five years and each vested tranche expires two years after its vesting date, tying long-term incentives to continued service and performance.

How many VICOR CORP shares does Claudio Tuozzolo own after this Form 4?

After the reported transactions, Claudio Tuozzolo directly owns 13,240 shares of VICOR CORP common stock. In addition, he holds 5,187 non-qualified stock options, each representing the right to purchase one share of VICOR common stock if exercised in the future.

What is the exercise price on Claudio Tuozzolo’s VICR stock options?

The non-qualified stock options granted to Claudio Tuozzolo have an exercise price of $266.005 per share. This price is the fixed amount he must pay per share to convert each option into VICOR common stock once the options have vested and before they expire.

Under which plan were Claudio Tuozzolo’s VICR options granted and how do they vest?

The 5,187 non-qualified stock options were granted under VICOR CORP’s Amended and Restated 2000 Stock Option and Incentive Plan. According to the filing footnote, these options vest over a five-year period, aligning the award with a multi-year service and performance horizon.

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

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Accepted by SEC EDGAR 05/06/2026 - 04:13 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)
05/05/2026

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								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	$266.005	05/05/2026		A		5,187		(1)	(2)	Common Stock	5,187	$0	5,187	D

Explanation of Responses:

1. Granted under the Company's Amended and Restated 2000 Stock Option and Incentive Plan on May 5, 2026 and vest over a five year period.

2. Options expire 2 years from each date of vesting.

	/s/ Kemble D. Morrison Attorney in fact for Claudio Tuozzolo	05/06/2026
	** 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)