Vicor (VICR) vice president sells 8,984 shares after option exercises

Rhea-AI Filing Summary

VICOR CORP corporate vice president Claudio Tuozzolo reported an exercise-and-sell transaction in company stock. On May 11, 2026, he exercised options to acquire a total of 8,984 shares of Common Stock through two derivative exercises at exercise prices of $50.00 and $33.96 per share, granted under the company’s Amended and Restated 2000 Stock Option and Incentive Plan. On the same date, he completed open-market sales totaling 8,984 shares of Common Stock at an average price of about $304.65 per share. Following these transactions, he directly holds 13,240 shares of VICOR CORP Common Stock.

Insights

Equity analyst

Vicor VP exercised options and sold an equivalent number of shares, a notable but not transformative portfolio move.

Corporate vice president Claudio Tuozzolo exercised stock options for 8,984 shares of VICOR CORP Common Stock at exercise prices of $50.00 and $33.96. He then executed open-market sales for the same 8,984 shares at about $304.65 per share.

This pattern reflects a classic exercise-and-sell transaction, converting option awards into cash while maintaining a reduced equity position. After the trades, Tuozzolo directly holds 13,240 shares. With no remaining derivative positions listed, the visible exposure now consists solely of common shares.

Insider Trade Summary

Net Seller: 8,984 shares ($2,737,009)

Net Sell 6 txns

Insider Tuozzolo Claudio

Role Corp. Vice President

Sold 8,984 shs ($2.74M)

Type	Security	Shares	Price	Value
Exercise	Non Qualified Stock Option	4,638	$0.00	--
Exercise	Non Qualified Stock Option	4,346	$0.00	--
Exercise	Common Stock	4,638	$33.96	$158K
Sale	Common Stock	4,638	$304.6537	$1.41M
Exercise	Common Stock	4,346	$50.00	$217K
Sale	Common Stock	4,346	$304.6537	$1.32M

Holdings After Transaction: Non Qualified Stock Option — 29,913 shares (Direct, null); Common Stock — 17,878 shares (Direct, null)

Footnotes (1)

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. Options expire two years from each vest date. Granted under the Companys Amended and Restated 2000 Stock Option and Incentive Plan on May 2, 2025 and vest over a five year period

Key Figures

Shares sold: 8,984 shares Sale price: $304.6537 per share Options exercised (strike $50.00): 4,346 shares +3 more

6 metrics

Shares sold 8,984 shares Total open-market sales of Common Stock on May 11, 2026

Sale price $304.6537 per share Price for Common Stock sales on May 11, 2026

Options exercised (strike $50.00) 4,346 shares Non Qualified Stock Option exercise into Common Stock

Options exercised (strike $33.96) 4,638 shares Non Qualified Stock Option exercise into Common Stock

Shares after transactions 13,240 shares Direct Common Stock holdings following May 11, 2026 trades

Net buy/sell shares 8,984 shares net sold transactionSummary netBuySellShares and netBuySellDirection

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" for derivative transactions"

derivative exercise/conversion financial

"transaction_action: "derivative exercise/conversion" for option-related entries"

open-market sale financial

"transaction_action: "open-market sale" describing Common Stock dispositions"

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

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

vest over a five year period financial

"footnote: options "vest over a five year period" and expire two years from vest"

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 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)
05/11/2026

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	05/11/2026		M		4,638	A	$33.96	17,878	D
Common Stock	05/11/2026		S		4,638	D	$304.6537	13,240	D
Common Stock	05/11/2026		M		4,346	A	$50	17,586	D
Common Stock	05/11/2026		S		4,346	D	$304.6537	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	05/11/2026		M			4,638	(1)	(2)	Common Stock	4,638	$0	29,913	D
Non Qualified Stock Option	$50	05/11/2026		M			4,346	(3)	(2)	Common Stock	4,346	$0	21,381	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.

3. Granted under the Companys Amended and Restated 2000 Stock Option and Incentive Plan on May 2, 2025 and vest over a five year period

	/s/Kemble D. Morrison Attorney in fact for Claudio Tuozzolo	05/12/2026
	** 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)

FAQ

What did Vicor (VICR) executive Claudio Tuozzolo report in this Form 4?

Claudio Tuozzolo reported exercising stock options for 8,984 shares of Vicor Common Stock and selling 8,984 shares in open-market transactions. These trades occurred on May 11, 2026, and reflect an exercise-and-sell pattern tied to his equity compensation awards.

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

He sold a total of 8,984 shares of Vicor Common Stock in open-market transactions. The reported sale price was approximately $304.65 per share, based on transaction entries using $304.6537 as the sale price for the shares disposed on May 11, 2026.

What stock options did Claudio Tuozzolo exercise in this Vicor (VICR) filing?

Tuozzolo exercised two Non Qualified Stock Option grants covering 4,346 and 4,638 underlying shares of Vicor Common Stock. The options had exercise prices of $50.00 and $33.96 per share and were granted under Vicor’s Amended and Restated 2000 Stock Option and Incentive Plan.

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

Following the reported May 11, 2026 transactions, Tuozzolo directly holds 13,240 shares of Vicor Common Stock. This figure reflects his remaining equity stake after exercising options for 8,984 shares and selling 8,984 shares in open-market sales on the same date.

Were the Vicor (VICR) option exercises part of an equity incentive plan?

Yes. The exercised Non Qualified Stock Options were granted under Vicor’s Amended and Restated 2000 Stock Option and Incentive Plan. Footnotes state they were granted in May 2024 and May 2025 and vest over five years, with options expiring two years from each vest date.

Does this Vicor (VICR) Form 4 show remaining derivative positions for Claudio Tuozzolo?

The filing lists option exercises converting derivative awards into common stock but shows no remaining derivative positions in the derivative summary. The key reported holdings after the transactions are 13,240 shares of Vicor Common Stock held directly by Tuozzolo.