Vicor (VICR) director sale of 2,073 shares leaves 4,034 held

Rhea-AI Filing Summary

VICOR CORP (VICR) director Samuel J. Anderson reported selling 2,073 shares of Common Stock on 2026-08-17 in an open market or private transaction at $252.6001 per share. After this sale, he directly holds 4,034 shares of VICR. The filing indicates the transaction was not made under a Rule 10b5-1 trading plan.

Insider Trade Summary

Net Seller: 2,073 shares

Net Sell 1 txn

Insider ANDERSON SAMUEL J

Role Director

Sold 2,073 shs ($524K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,073	$252.6001	$524K

Holdings After Transaction: Common Stock — 4,034 shares (Direct)

Key Figures

Shares Sold: 2,073 shares Sale Price: $252.6001 per share Shares Held After Transaction: 4,034 shares +1 more

4 metrics

Shares Sold 2,073 shares Common Stock sale on 2026-08-17

Sale Price $252.6001 per share Per-share transaction price for the 2,073-share sale

Shares Held After Transaction 4,034 shares Total direct holdings following the reported sale

Net Buy/Sell Shares -2,073 shares Net effect of reported transactions in this Form 4

Key Terms

Common Stock, open market or private transaction, Rule 10b5-1

3 terms

Common Stock financial

"The security title is reported as Common Stock for this transaction"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

open market or private transaction financial

"Transaction code description states Sale in open market or private transaction"

Rule 10b5-1 regulatory

"The filing’s checkbox indicates the trade was not under a Rule 10b5-1 plan"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

What insider transaction did VICR director Samuel J. Anderson report?

Samuel J. Anderson reported a sale of 2,073 VICR shares on 2026-08-17. The transaction was in Common Stock and classified as a sale in an open market or private transaction at a stated per-share price.

At what price were the 2,073 VICR shares sold by Samuel J. Anderson?

The 2,073 VICR shares were sold at $252.6001 per share. This price is reported as the per-share transaction price for the Common Stock sale on 2026-08-17 in the Form 4 data.

How many VICR shares does Samuel J. Anderson hold after this Form 4 transaction?

After the reported sale, Samuel J. Anderson directly holds 4,034 shares of VICR Common Stock. This figure is listed as the total shares following the transaction in the insider filing data.

Was Samuel J. Anderson’s VICR stock sale under a Rule 10b5-1 trading plan?

The filing indicates it was not under a Rule 10b5-1 plan. The document-level checkbox for Rule 10b5-1 is marked false, meaning the transaction was not affirmed as made pursuant to such a trading plan.

What role does Samuel J. Anderson have at VICOR CORP (VICR)?

Samuel J. Anderson is reported as a director of VICOR CORP. The Form 4 data flags him as a director and not as an officer or ten percent owner in this filing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/18/2026 - 04:15 PM Accepted by SEC EDGAR 08/18/2026 - 04:14 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^*

ANDERSON SAMUEL J

(Last) (First) (Middle)

25 FRONTAGE ROAD

(Street)

ANDOVER MASSACHUSETTS 01810

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/17/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	08/17/2026		S		2,073	D	$252.6001	4,034	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:

	/s/Kemble Morrison Attorney in Fact for Samuel J. Anderson	08/18/2026
	** 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.
* Form 4: SEC 1474 (03-26)