VICR affiliate files Form 144 to sell shares

VICR affiliate reports multiple proposed sales of Common Stock under Rule 144 and 10b5-1 plans.

Rhea-AI Filing Summary

VICR affiliate reports multiple proposed sales of Common Stock under Rule 144 and 10b5-1 plans. The filing lists repeated 50,000-share tranches sold on 03/04/2026 through 03/18/2026 and earlier December 2025 tranches, with per-tranche proceeds shown for each sale date.

Insights

Insider Transactions Compliance Analyst

Filing documents routine, pre-arranged 10b5-1 sales by an affiliate; dates and per-tranche proceeds are listed.

The excerpt lists multiple 50,000-share tranches executed on specific dates in March 2026, plus smaller December 2025 tranches. Each row shows the sale date and gross proceeds (for example, 10077245.00 on 03/04/2026).

These sales are recorded as 10b5-1 transactions in the excerpt. Cash-flow treatment and overall post-transaction holdings are not provided in the excerpt; subsequent filings would provide position context if disclosed.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does VICR's Form 144 show about insider sales?

It lists multiple proposed and executed sales by an affiliate under Rule 144 and 10b5-1. The excerpt records repeated 50,000-share tranches in March 2026 and smaller tranches in December 2025, each with the sale date and gross proceeds for that tranche.

Who is the selling party in the VICR Form 144 entries?

The excerpt identifies Patrizio Vinciarelli as the selling party. The entries list 10b5-1 sales for Patrizio Vinciarelli with a street address and show dates, share counts, and per-tranche proceeds for each sale.

How many shares were sold in the March 2026 tranches shown?

The March 2026 rows predominantly show 50,000-share tranches. The excerpt records 50,000-share sales on multiple dates from 03/04/2026 through 03/18/2026, each with an associated proceeds figure.

Were the sales executed under pre-arranged plans?

Yes — the entries are labeled as 10b5-1 sales in the excerpt. That designation indicates the sales were made pursuant to pre-arranged trading plans as recorded in these rows; the filing text in the excerpt uses the term 10b5-1.

Does the excerpt state the net holdings after these transactions?

No — the excerpt does not provide post-transaction holdings. The provided rows show sale dates, share counts, and proceeds, but do not disclose the seller's remaining beneficial ownership or total holdings after the sales.

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

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Accepted by SEC EDGAR 03/19/2026 - 04:21 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0000901484
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	VICOR CORPORATION
SEC File Number	000-18277
Address of Issuer	25 Frontage Road Andover MASSACHUSETTS 01810
Phone	9784702900
Name of Person for Whose Account the Securities are To Be Sold	PATRIZIO VINCIARELLI
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director
Relationship to Issuer	Officer
Relationship to Issuer	10% Stockholder

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	50000	9592000.00	33646426	03/19/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	11/10/1981	Founders Shares	Issuer			50000	11/10/1981	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/18/2026	50000	9809142.46
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/17/2026	50000	9532498.30
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/16/2026	50000	9233644.50
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/13/2026	50000	8542808.13
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/12/2026	50000	8372990.00
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/11/2026	50000	8870435.00
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/10/2026	50000	8862570.00
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/09/2026	50000	8212935.00
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/06/2026	50000	8314785.00
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/05/2026	50000	9341275.00
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/04/2026	50000	10077245.00
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	12/31/2025	1883	215336.30
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	12/30/2025	20000	2259535.98
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	12/29/2025	5917	657962.22
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	12/26/2025	20000	2202474.09
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	12/24/2025	12400	1349971.88
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	12/23/2025	20000	2155900.00
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	12/22/2025	20000	2105570.63

144: Remarks and Signature

Remarks
Date of Notice	03/19/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/03/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Patrizio Vinciarelli
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)