[Form 4] VICOR CORP Insider Trading Activity

Rhea-AI Filing Summary

Vicor (VICR) reported insider transactions by its CFO, Treasurer and Secretary, who is also a Director. On 10/22/2025, the reporting person exercised non‑qualified stock options and sold shares pursuant to a Rule 10b5‑1 trading plan adopted on December 13, 2024.

Exercises: 3,246 options at $41.61, 1,241 at $60.61, and 754 at $53.07. Sales: 3,246 shares at $80, 1,241 at $85, and 754 at $85. Following these transactions, the insider directly owned 875 shares of common stock.

Derivative holdings after the reported transactions include options covering 12,983 shares at $41.61, 3,722 shares at $60.61, and 3,015 shares at $53.07. The filing notes options expire two years from each vesting date.

Insider Trade Summary

Net Seller: 5,241 shares ($429,255)

Net Sell 9 txns

Insider Schmidt James F

Role CFO, Treasurer, Secretary

Sold 5,241 shs ($429K)

Type	Security	Shares	Price	Value
Exercise	Non Qualified Stock Option	3,246	$0.00	--
Exercise	Non Qualified Stock Option	1,241	$0.00	--
Exercise	Non Qualified Stock Option	754	$0.00	--
Exercise	Common Stock	3,246	$41.61	$135K
Sale	Common Stock	3,246	$80.00	$260K
Exercise	Common Stock	1,241	$60.61	$75K
Sale	Common Stock	1,241	$85.00	$105K
Exercise	Common Stock	754	$53.07	$40K
Sale	Common Stock	754	$85.00	$64K

Holdings After Transaction: Non Qualified Stock Option — 12,983 shares (Direct); Common Stock — 4,121 shares (Direct)

Footnotes (1)

1. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 13, 2024. Options expire 2 years from each vesting date.

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^*

Schmidt James F

(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
X	Officer (give title below)		Other (specify below)
	CFO, Treasurer, Secretary

3. Date of Earliest Transaction (Month/Day/Year)
10/22/2025

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	10/22/2025		M		3,246	A	$41.61	4,121	D
Common Stock	10/22/2025		S(1)		3,246	D	$80	875	D
Common Stock	10/22/2025		M		1,241	A	$60.61	2,116	D
Common Stock	10/22/2025		S(1)		1,241	D	$85	875	D
Common Stock	10/22/2025		M		754	A	$53.07	1,629	D
Common Stock	10/22/2025		S(1)		754	D	$85	875	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	10/22/2025		M			3,246	05/02/2025	(2)	Common Stock	3,246	$0	12,983	D
Non Qualified Stock Option	$60.61	10/22/2025		M			1,241	04/25/2025	(2)	Common Stock	1,241	$0	3,722	D
Non Qualified Stock Option	$53.07	10/22/2025		M			754	06/23/2025	06/23/2033	Common Stock	754	$0	3,015	D

Explanation of Responses:

1. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 13, 2024.

2. Options expire 2 years from each vesting date.

	/s/Quentin Fendelet Attorney in Fact for James F. Schmidt	10/23/2025
	** 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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