VICR insider filing: Director sale and 4,713-share option exercise

Rhea-AI Filing Summary

Vicor Corp director Estia J. Eichten reported insider transactions. On 10/23/2025, the director sold 5,000 shares at $91.2465 and sold an additional 555 shares at $91.0071. The same day, 4,713 shares were acquired via option exercise at $10.61. Following these transactions, the director directly owned 229,425 shares.

Insider Trade Summary

Net Seller: 5,555 shares ($506,741)

Net Sell 4 txns

Insider EICHTEN ESTIA J

Role Director

Sold 5,555 shs ($507K)

Type	Security	Shares	Price	Value
Exercise	Non Qualified Stock Option	4,713	$0.00	--
Sale	Common Stock	5,000	$91.2465	$456K
Exercise	Common Stock	4,713	$10.61	$50K
Sale	Common Stock	555	$91.0071	$51K

Holdings After Transaction: Non Qualified Stock Option — 0 shares (Direct); Common Stock — 225,267 shares (Direct)

Footnotes (1)

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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^*

EICHTEN ESTIA J

(Last) (First) (Middle)

25 FRONTAGE ROAD

(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)
10/23/2025

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	10/23/2025		S		5,000	D	$91.2465	225,267	D
Common Stock	10/23/2025		M		4,713	A	$10.61	229,980	D
Common Stock	10/23/2025		S		555	D	$91.0071	229,425	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	$10.61	10/23/2025		M			4,713	(1)	06/17/2026	Common Stock	4,713	$0	0	D

Explanation of Responses:

1. This stock option is exercisable in full.

	/s/Quentin Fendelet Attorney in fact for Estia J. Eichten	10/27/2025
	** 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 did Vicor (VICR) disclose in this Form 4?

A director reported selling 5,000 shares at $91.2465, selling 555 shares at $91.0071, and exercising options for 4,713 shares at $10.61 on 10/23/2025.

How many VICR shares does the director own after the transactions?

The director directly owned 229,425 shares after the reported transactions.

What were the sale prices reported for VICR shares?

Sales occurred at $91.2465 for 5,000 shares and $91.0071 for 555 shares.

How many options were exercised and at what price for VICR?

The director exercised 4,713 non-qualified stock options at an exercise price of $10.61.

What is the reporting person’s relationship to Vicor (VICR)?

The reporting person is a Director of Vicor Corp.

What was the transaction date on the Vicor Form 4?

All reported transactions occurred on 10/23/2025.