[Form 4] VICOR CORP Insider Trading Activity

Rhea-AI Filing Summary

Vicor Corp director reports option exercise and share sale

A Vicor Corp director reported exercising a non-qualified stock option for 2,000 shares of common stock at an exercise price of $39.25 per share on 11/17/2025, acquiring 2,000 shares. On the same date, the director reported selling 2,000 shares of common stock at a price of $87.69 per share, leaving 0 shares of common stock directly owned after the transactions.

Following these transactions, the director reported beneficial ownership of 6,000 non-qualified stock options. The filing states that the sale was effected under a Rule 10b5-1 trading plan adopted on September 12, 2024, and notes that the options expire one year from each vesting date.

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 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
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/17/2025

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	11/17/2025		M		2,000	A	$39.25	2,000	D
Common Stock	11/17/2025		S(1)		2,000	D	$87.69	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	$39.25	11/17/2025		M			2,000	11/17/2025	(2)	Common Stock	2,000	$0	6,000	D

Explanation of Responses:

1. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2024.

2. Options expire 1 year from each vesting date.

	/s/Quentin A. Fendelet Attorney in fact for Andrew D'Amico	11/18/2025
	** 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 transaction did VICOR (VICR) report on this Form 4?

The Form 4 reports that a Vicor Corp director exercised a non-qualified stock option for 2,000 shares of common stock at $39.25 per share and sold 2,000 shares at $87.69 per share on 11/17/2025.

How many VICOR (VICR) shares does the reporting person own after the transaction?

After the reported transactions, the director reported owning 0 shares of Vicor common stock directly.

What stock options does the VICOR (VICR) director still hold?

The director reported beneficial ownership of 6,000 non-qualified stock options following the transactions, with the options linked to Vicor common stock.

At what prices were the VICOR (VICR) option exercise and share sale reported?

The non-qualified stock option was exercised at an exercise price of $39.25 per share, and the 2,000 shares of Vicor common stock were sold at a price of $87.69 per share.

Was the VICOR (VICR) share sale under a Rule 10b5-1 trading plan?

Yes. The filing states that the sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2024.

When do the VICOR (VICR) options reported on this Form 4 expire?

The filing notes that the options expire 1 year from each vesting date, as stated in the explanation of responses.

What is the reporting person’s role at VICOR (VICR)?

The reporting person is identified as a Director of Vicor Corp on the Form 4.