VICR insider exercises options and reports 5,374 shares owned

Rhea-AI Filing Summary

Vicor Corp (VICR) insider activity: Corporate VP - Marketing Robert Gendron reported transactions on 10/23/2025. He exercised stock options for 960 shares at $75.43 and 1,156 shares at $60.61, then sold 960 shares and 1,156 shares at $88.6811. Following these trades, he directly beneficially owned 5,374 shares. The filing also lists remaining option holdings.

Insider Trade Summary

Net Seller: 2,116 shares ($187,649)

Net Sell 6 txns

Insider GENDRON ROBERT

Role Corp. VP - Marketing

Sold 2,116 shs ($188K)

Type	Security	Shares	Price	Value
Exercise	Non Qualified Stock Option	960	$0.00	--
Exercise	Non Qualified Stock Option	1,156	$0.00	--
Exercise	Common Stock	960	$75.43	$72K
Sale	Common Stock	960	$88.6811	$85K
Exercise	Common Stock	1,156	$60.61	$70K
Sale	Common Stock	1,156	$88.6811	$103K

Holdings After Transaction: Non Qualified Stock Option — 480 shares (Direct); Common Stock — 6,334 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^*

GENDRON ROBERT

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Corp. VP - Marketing

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		M		960	A	$75.43	6,334	D
Common Stock	10/23/2025		S		960	D	$88.6811	5,374	D
Common Stock	10/23/2025		M		1,156	A	$60.61	6,530	D
Common Stock	10/23/2025		S		1,156	D	$88.6811	5,374	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	10/23/2025		M			960	05/12/2025	(1)	Common Stock	960	$0	480	D
Non Qualified Stock Option	$60.61	10/23/2025		M			1,156	04/25/2025	(1)	Common Stock	1,156	$0	1,154	D

Explanation of Responses:

1. Options expire 2 years from each vesting date.

	/s/Quentin A. Fendelet Attorney in Fact for Robert Gendron	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 insider transactions did VICR report on 10/23/2025?

Robert Gendron exercised 960 options at $75.43 and 1,156 options at $60.61, then sold 960 and 1,156 shares at $88.6811.

How many VICR shares does the insider hold after these trades?

Direct beneficial ownership is 5,374 shares after the reported transactions.

What were the exercise prices of the VICR options used?

Options were exercised at $75.43 and $60.61.

At what price were VICR shares sold in the reported trades?

Shares were sold at $88.6811 on 10/23/2025.

What derivative (option) holdings remain for the insider?

Remaining listed options are 480 (exercise price $75.43) and 1,154 (exercise price $60.61).

When do the VICR options expire?

Per the footnote, options expire 2 years from each vesting date.

Who is the reporting person in the VICR Form 4?

Corporate VP - Marketing Robert Gendron filed the report as a single reporting person.