VICOR (VICR) CEO Patrizio Vinciarelli makes 7,000-share charitable stock gifts

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

VICOR CORP Chairman and CEO Patrizio Vinciarelli reported charitable gifts of company stock. On May 13, 2026, he made two bona fide gifts totaling 7,000 shares of common stock, recorded at $0.0000 per share, reflecting transfers without sale proceeds.

Footnotes state that gifts were made to Brigham and Women's Hospital Inc. and Beth Israel Lahey Health. After these gifts, Vinciarelli directly holds 8,851,590 shares of VICOR CORP common stock. He also indirectly holds 167,125 shares as trustee of an irrevocable trust established for the benefit of his child.

Insider Trade Summary

7,000 shares gifted

Mixed 3 txns

Insider VINCIARELLI PATRIZIO

Role Chairman and CEO

Type	Security	Shares	Price	Value
Gift	Common Stock	3,500	$0.00	--
Gift	Common Stock	3,500	$0.00	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 8,851,590 shares (Direct, null); Common Stock — 167,125 shares (Indirect, See footnote)

Footnotes (1)

These shares are held by the reporting person as Trustee of the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012, established for the benefit of the child of the reporting person. Gift to Brigham and Womens Hospital Inc. Gift to Beth Israel Lahey Health.

Key Figures

Total shares gifted: 7,000 shares First gift size: 3,500 shares Second gift size: 3,500 shares +2 more

5 metrics

Total shares gifted 7,000 shares Two bona fide gifts of common stock on May 13, 2026

First gift size 3,500 shares Bona fide gift of common stock at $0.0000 per share

Second gift size 3,500 shares Second bona fide gift of common stock at $0.0000 per share

Direct holdings after gifts 8,851,590 shares Common stock directly owned after May 13, 2026 transactions

Indirect trust holdings 167,125 shares Held as trustee of irrevocable trust for benefit of child

Key Terms

bona fide gift, indirect ownership, irrevocable trust, transaction code G, +1 more

5 terms

bona fide gift financial

"transaction code G is described as a bona fide gift"

A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.

indirect ownership financial

"167,125 shares are reported with indirect ownership as trustee"

irrevocable trust financial

"shares are held by the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012"

An irrevocable trust is a legal arrangement where an owner transfers assets into a separate entity managed by a trustee and gives up the power to modify or reclaim those assets. For investors it matters because putting stock or other holdings into such a trust can change who controls and benefits from the assets, affect taxes and creditor protection, and influence how easy it is to sell or value those holdings—like placing valuables in a locked safe overseen by someone else.

transaction code G financial

"transaction code G is used for the non-derivative common stock gifts"

Chairman and CEO financial

"the reporting person is identified as Chairman and CEO of VICOR CORP"

Form 4 Insider Transactions: What Each Field Means →

05/14/2026 - 10:47 AM

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^*

VINCIARELLI PATRIZIO

(Last)

(First)

(Middle)

C/O VICOR CORPORATION

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	X	10% Owner
X	Officer (give title below)		Other (specify below)
	Chairman and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock								167,125	I	See footnote⁽¹⁾
Common Stock	05/13/2026		G		3,500⁽²⁾	D	$0	8,851,590	D
Common Stock	05/13/2026		G		3,500⁽³⁾	D	$0	8,848,090	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. These shares are held by the reporting person as Trustee of the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012, established for the benefit of the child of the reporting person.

2. Gift to Brigham and Womens Hospital Inc.

3. Gift to Beth Israel Lahey Health.

	/s/Kemble D. Morrison Attorney in fact for Patrizio Vinciarelli	05/14/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions did VICOR (VICR) report for Patrizio Vinciarelli?

VICOR reported that Chairman and CEO Patrizio Vinciarelli made two bona fide gifts totaling 7,000 shares of common stock on May 13, 2026. These transfers were recorded at zero dollars per share, meaning they were charitable gifts rather than open-market sales.

How many VICOR (VICR) shares did Patrizio Vinciarelli gift and to whom?

Patrizio Vinciarelli gifted a total of 7,000 VICOR common shares, in two blocks of 3,500 shares each. Footnotes state the recipients were Brigham and Women's Hospital Inc. and Beth Israel Lahey Health, indicating charitable, non-market transfers of stock.

What are Patrizio Vinciarelli’s direct VICOR (VICR) holdings after these gifts?

After the reported gifts, Patrizio Vinciarelli directly holds 8,851,590 shares of VICOR CORP common stock. This figure comes from the post-transaction share balance disclosed for his direct ownership on the Form 4 dated May 13, 2026.

Does Patrizio Vinciarelli have indirect VICOR (VICR) ownership through a trust?

Yes. The filing shows 167,125 VICOR common shares held indirectly, with Vinciarelli acting as trustee of the Patrizio Vinciarelli Irrevocable Trust dated December 21, 2012, which was established for the benefit of his child, as described in a footnote.

Were the VICOR (VICR) insider transactions market sales or charitable gifts?

The reported transactions were charitable gifts, not market sales. Both entries use transaction code G, described as a bona fide gift, with a transaction price of $0.0000 per share, and footnotes identifying charitable healthcare institutions as recipients.