Vicor (VICR) officer exercises options, sells shares; holds 5,374

Vicor Corp (VICR) reported insider transactions by its Corp. VP - Marketing, Robert Gendron, on a Form 4.

Rhea-AI Filing Summary

Vicor Corp (VICR) reported insider transactions by its Corp. VP - Marketing, Robert Gendron, on a Form 4. On 10/24/2025, he exercised stock options and sold the resulting shares in three same-day trades: 794 exercised at $41.61 and sold at $90.5004; 1,184 exercised at $33.96 and sold at $90.5004; 817 exercised at $32.97 and sold at $90.5004. On 10/27/2025, he exercised 1,321 options at $69.04 and sold the shares at $92. After these transactions, he directly owned 5,374 shares.

Insider Trade Summary

Exercise and Sale: 4,116 shares ($183K approx. pre-tax spread)

Exercise and Sale 12 txns

Insider GENDRON ROBERT

Role Corp. VP - Marketing

Sold 4,116 shs ($374K)

Approx. gross sale proceeds $374K

Approx. exercise cost $191K

Approx. pre-tax spread $183K

Type	Security	Shares	Price	Value
Exercise	Non Qualified Stock Option	1,321	$0.00	$0.00
Exercise	Common Stock	1,321	$69.04	$91K
Sale	Common Stock	1,321	$92.00	$122K
Exercise	Non Qualified Stock Option	794	$0.00	$0.00
Exercise	Non Qualified Stock Option	1,184	$0.00	$0.00
Exercise	Non Qualified Stock Option	817	$0.00	$0.00
Exercise	Common Stock	794	$41.61	$33K
Sale	Common Stock	794	$90.5004	$72K
Exercise	Common Stock	1,184	$33.96	$40K
Sale	Common Stock	1,184	$90.5004	$107K
Exercise	Common Stock	817	$32.97	$27K
Sale	Common Stock	817	$90.5004	$74K

Holdings After Transaction: Non Qualified Stock Option — 10,381 contracts (Direct); Common Stock — 5,374 shares (Direct)

Footnotes (1)

1. F1. Options expire 2 years from each vesting date.

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Accepted by SEC EDGAR 10/28/2025 - 01:21 PM Learn about SEC filing dates

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)
10/24/2025

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	10/24/2025		M		794	A	$41.61	6,168	D
Common Stock	10/24/2025		S		794	D	$90.5004	5,374	D
Common Stock	10/24/2025		M		1,184	A	$33.96	6,558	D
Common Stock	10/24/2025		S		1,184	D	$90.5004	5,374	D
Common Stock	10/24/2025		M		817	A	$32.97	6,191	D
Common Stock	10/24/2025		S		817	D	$90.5004	5,374	D
Common Stock	10/27/2025		M		1,321	A	$69.04	6,695	D
Common Stock	10/27/2025		S		1,321	D	$92	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	$41.61	10/24/2025		M			794	05/02/2025	(1)	Common Stock	794	$0	2,382	D
Non Qualified Stock Option	$33.96	10/24/2025		M			1,184	05/03/2025	(1)	Common Stock	1,184	$0	4,734	D
Non Qualified Stock Option	$32.97	10/24/2025		M			817	05/10/2025	(1)	Common Stock	817	$0	3,265	D
Non Qualified Stock Option	$69.04	10/27/2025		M			1,321	06/24/2025	06/24/2030	Common Stock	1,321	$0	0	D

Explanation of Responses:

1. Options expire 2 years from each vesting date.

	/s/Quentin A. Fendelet Attorney in fact for Robert Gendron	10/28/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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