[Form 4] Vicor Corp Insider Trading Activity

Rhea-AI Filing Summary

Vicor Corp (VICR) Form 4 — 23 Jul 2025

Director Andrew D’Amico exercised two blocks of non-qualified stock options and immediately sold the resulting shares pursuant to a Rule 10b5-1 trading plan.

• Exercised 4,596 options at $33.96 and 1,217 options at $32.89.
• Disposed of the same 5,813 common shares at $63.00, producing gross proceeds of about $366 k.
• Remains entitled to 18,384 options from the first grant and 4,864 from the second.
• All options expire two years after each vesting date.

The filing contains no operational or financial performance data; it solely documents this insider trading activity.

Positive

• Rule 10b5-1 plan indicates transactions were pre-scheduled, reducing potential insider-timing concerns.
• Director retains 23,248 options, maintaining long-term equity alignment.

Negative

• Net sale of 5,813 shares at $63 could be interpreted as reduced short-term confidence.
• Cash proceeds of ~$366 k represent a notable divestiture for a single director.

Insights

Equity Research Analyst

TL;DR – Minor, pre-planned insider sale; negligible effect on valuation.

The 5,813-share sale represents less than 0.02 % of VICR’s 44 M share float and was executed under a 10b5-1 plan, limiting informational value. Net cash realised (~$0.17 M after exercise costs) is modest and does not materially change the director’s remaining equity incentives (23,248 options outstanding). Therefore, I view the event as routine housekeeping with no impact on forward estimates or target price.

Corporate Governance Specialist

TL;DR – Governance neutral; plan-based trade, incentives maintained.

The sale complies with Rule 10b5-1 and occurs more than 30 days after plan adoption (12 Sep 2024), satisfying SEC cooling-off expectations. D’Amico still holds a meaningful option position, preserving alignment with shareholders. There are no red flags regarding timing, volume or undisclosed pledging, so governance risk remains unchanged.

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).

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)
07/23/2025

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	07/23/2025		M		4,596	A	$33.96	4,596	D
Common Stock	07/23/2025		S(1)		4,596	D	$63	4,596	D
Common Stock	07/23/2025		M		1,217	A	$32.89	1,217	D
Common Stock	07/23/2025		S(1)		1,217	D	$63	1,217	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	$33.96	07/23/2025		M			4,596	05/03/2025	(2)	Common Stock	4,596	$0	18,384	D
Non Qualified Stock Option	$32.89	07/23/2025		M			1,217	06/21/2025	06/21/2034	Common Stock	1,217	$0	4,864	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 2 years from each vesting date.

	/s/Quentin A. Fendelet Attorney in Fact for Andrew D'Amico	07/24/2025
	** 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

How many VICR shares did Director Andrew D’Amico sell?

He sold 5,813 shares of Vicor Corp common stock.

At what price were the VICR shares sold?

All shares were sold at $63.00 per share.

Were the transactions executed under a 10b5-1 plan?

Yes, the Form 4 states the sale was made under a Rule 10b5-1 trading plan adopted on 12 Sep 2024.

What were the option exercise prices?

Options were exercised at $33.96 (4,596 shares) and $32.89 (1,217 shares).

How many options does the director still hold after the transaction?

He retains 18,384 options from the first grant and 4,864 from the second, totalling 23,248 options.