Vicor (VICR) director Estia J. Eichten sells 2,000 shares under 10b5-1 plan

Rhea-AI Filing Summary

Vicor Corporation director Estia J. Eichten reported an open-market sale of 2,000 shares of common stock at $174.00 per share on March 13, 2026. After the sale, Eichten directly holds 188,838 shares. The transaction was executed under a pre-arranged Rule 10b5-1 trading plan adopted on December 11, 2025, indicating it was scheduled in advance rather than timed discretionarily.

Insider Trade Summary

Net Seller: 2,000 shares ($348,000)

Net Sell 1 txn

Insider EICHTEN ESTIA J

Role Director

Sold 2,000 shs ($348K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,000	$174.00	$348K

Holdings After Transaction: Common Stock — 188,838 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)

C/O VICOR CORPORATION

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)
03/13/2026

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	03/13/2026		S(1)		2,000	D	$174	188,838	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

Explanation of Responses:

1. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 11, 2025.

	/s/Kemble D. Morrison. Attorney in fact for Estia J. Eichten	03/16/2026
	** 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 transaction did Vicor (VICR) director Estia J. Eichten report?

Estia J. Eichten reported selling 2,000 Vicor shares. The transaction was an open-market sale of common stock at $174.00 per share. This was disclosed on a Form 4 insider filing and reflects a relatively small portion of Eichten’s overall direct holdings.

How many Vicor (VICR) shares does Estia J. Eichten hold after the sale?

After the transaction, Eichten holds 188,838 Vicor shares directly. This post-transaction balance shows that the 2,000 shares sold represent a minor reduction in Eichten’s position, with the director retaining a substantial continuing ownership stake in the company’s common stock.

At what price were the Vicor (VICR) shares sold by director Eichten?

The 2,000 Vicor shares were sold at $174.00 each. This price reflects the per-share consideration received in the open-market sale reported on the Form 4, giving the transaction a total value of $348,000 based on the shares and price disclosed.

Was the Vicor (VICR) insider sale by Estia J. Eichten under a Rule 10b5-1 plan?

Yes, the sale was made under a Rule 10b5-1 trading plan. A footnote states the transaction was effected pursuant to a pre-arranged plan adopted on December 11, 2025, indicating the trade was scheduled in advance rather than being an opportunistic market-timing decision.

Does the Form 4 show any option exercises or derivative trades for Vicor (VICR)?

No derivative transactions are reported in this Form 4. The filing lists only one non-derivative transaction: an open-market sale of 2,000 shares of common stock. The derivative section is empty, indicating no options or similar instruments were exercised in this report.

Is the Vicor (VICR) insider transaction a net buy or net sell event?

The filing shows a net sell of 2,000 Vicor shares. Transaction data summarize one sale of common stock with no offsetting purchases or acquisitions, resulting in a net-sell direction for the reporting period covered by this particular Form 4.