VICOR (VICR) director exercises options, then sells 565 shares in open market

Rhea-AI Filing Summary

VICOR CORP director Andrew D'Amico reported exercising stock options and selling shares on the same day. On May 12, 2026, he exercised a Non Qualified Stock Option for 565 shares of common stock at an exercise price of $75.43 per share, converting the derivative into common stock. He then completed an open-market sale of 565 shares of common stock at a price of $303.03 per share, leaving no shares or options from this grant shown as remaining after the transactions.

Insider Trade Summary 10b5-1

Net Seller: 565 shares ($171,212)

Net Sell 3 txns

Insider D'Amico Andrew

Role null

Sold 565 shs ($171K)

Type	Security	Shares	Price	Value
Exercise	Non Qualified Stock Option	565	$0.00	--
Exercise	Common Stock	565	$75.43	$43K
Sale	Common Stock	565	$303.03	$171K

Holdings After Transaction: Non Qualified Stock Option — 0 shares (Direct, null); Common Stock — 565 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 565 shares Sale price: $303.03 per share Option exercise shares: 565 shares +3 more

6 metrics

Shares sold 565 shares Common stock open-market sale on May 12, 2026 at $303.03

Sale price $303.03 per share Common stock sale of 565 shares on May 12, 2026

Option exercise shares 565 shares Non Qualified Stock Option exercised on May 12, 2026

Option exercise price $75.43 per share Exercise price of Non Qualified Stock Option

Option expiration date May 12, 2028 Expiration of exercised Non Qualified Stock Option

Net shares sold 565 shares transactionSummary netBuySellShares reported as -565

Key Terms

Non Qualified Stock Option, open-market sale, derivative exercise/conversion, derivative security

4 terms

Non Qualified Stock Option financial

"security_title: "Non Qualified Stock Option" with 565 underlying shares exercised"

open-market sale financial

"transaction_action: "open-market sale" for 565 common shares at $303.03"

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.

derivative exercise/conversion financial

"transaction_action: "derivative exercise/conversion" describing option exercise into common stock"

derivative security financial

"transaction_code_description: "Exercise or conversion of derivative security""

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

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).

X

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^*

D'Amico Andrew

(Last) (First) (Middle)

25 FRONTAGE RD.

(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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/12/2026

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	05/12/2026		M		565	A	$75.43	565	D
Common Stock	05/12/2026		S		565	D	$303.03	0	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	$75.43	05/12/2026		M			565	05/12/2026	05/12/2028	Common Stock	565	$0	0	D

Explanation of Responses:

	/s/Kemble D. Morrison Attorney in fact for Andrew D'Amico	05/13/2026
	** 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 insider transaction did VICOR CORP (VICR) director Andrew D'Amico report?

Director Andrew D'Amico reported an option exercise and share sale. He exercised a non qualified stock option for 565 common shares at $75.43, then sold 565 common shares in an open-market sale at $303.03, all on May 12, 2026.

How many VICOR CORP (VICR) shares did Andrew D'Amico sell and at what price?

Andrew D'Amico sold 565 shares of VICOR CORP common stock. The reported sale price was $303.03 per share in an open-market transaction dated May 12, 2026, according to the Form 4 transaction details.

What stock options did Andrew D'Amico exercise at VICOR CORP (VICR)?

He exercised a Non Qualified Stock Option covering 565 underlying shares of VICOR CORP common stock. The exercise price disclosed was $75.43 per share, and the exercise occurred on May 12, 2026, as part of a derivative exercise transaction.

Did Andrew D'Amico retain any VICOR CORP (VICR) options after these transactions?

For this specific Non Qualified Stock Option, the Form 4 shows 0 derivative securities remaining after exercise. The derivative transaction entry lists total shares following the transaction as 0.00, indicating this option position was fully exercised and eliminated.

What was the expiration date of the exercised VICOR CORP (VICR) stock option?

The Non Qualified Stock Option that Andrew D'Amico exercised had an expiration date of May 12, 2028. He exercised 565 underlying common shares on May 12, 2026, two years before the stated expiration date of the option grant.