VICR director sells shares under 10b5-1 plan

Patrizio Vinciarelli filed a Form 144 reporting proposed sales of common stock under a 10b5-1 plan.

Accepted by SEC EDGAR 04/09/2026 - 04:23 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Patrizio Vinciarelli filed a Form 144 reporting proposed sales of common stock under a 10b5-1 plan.

The filing lists multiple March 2026 transactions, including sales of 50,000 shares on several dates with reported proceeds such as $9,184,896.98 (03/25/2026), $8,969,588.75 (03/19/2026) and $10,077,245.00 (03/04/2026).

Key Figures

Sale on 03/25/2026: 50,000 shares / $9,184,896.98 Sale on 03/19/2026: 50,000 shares / $8,969,588.75 Sale on 03/04/2026: 50,000 shares / $10,077,245.00

3 metrics

Sale on 03/25/2026 50,000 shares / $9,184,896.98 10b5-1 sale by Patrizio Vinciarelli

Sale on 03/19/2026 50,000 shares / $8,969,588.75 10b5-1 sale by Patrizio Vinciarelli

Sale on 03/04/2026 50,000 shares / $10,077,245.00 10b5-1 sale by Patrizio Vinciarelli

Key Terms

10b5-1, Form 144, Founders Shares

3 terms

10b5-1 regulatory

"10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Form 144 regulatory

"Filer Information | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Founders Shares market

"Common | 11/10/1981 | Founders Shares"

Founders shares are a special block of a company’s stock originally given to the people who started the business; they often carry extra voting power or favorable terms compared with regular shares. For investors, these shares matter because they concentrate control and influence how future funding, ownership dilution, and decision-making will play out—think of founders shares as the steering wheel that can steer a company’s direction even as more passengers (investors) climb aboard.

FAQ

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

What does the VICR Form 144 filing show?

The filing shows proposed sales of common stock by Patrizio Vinciarelli under a 10b5-1 plan. It lists multiple March 2026 sales of 50,000 shares on several dates with per-trade proceeds reported.

How large were some of the individual sales reported in the filing?

Individual trades reported include 50,000-share sales with proceeds such as $9,184,896.98 (03/25/2026) and $10,077,245.00 (03/04/2026). The filing lists many similar 50,000-share entries in March 2026.

Were these sales executed under a trading plan?

Yes. The entries are labeled as 10b5-1 Sales, indicating the transactions were executed under a prearranged trading plan for the reporting person, as shown in the listed transactions.

Does the Form 144 list who received proceeds from these sales?

The filing lists proceeds for each sale but does not attribute recipients beyond the selling person. Proceeds are shown per trade (e.g., $8,969,588.75 on 03/19/2026).

Are the listed securities described with any special label?

Yes. The filing references Common stock and also shows a line referencing Founders Shares with an 11/10/1981 date in the securities section.

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 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	24943	4489490.57	33646426	04/09/2026	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			24943	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	03/25/2026	50000	9184896.98
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/24/2026	23179	4170596.09
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/23/2026	5924	1039490.00
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/20/2026	44076	7928258.16
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	03/19/2026	50000	8969588.75
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

144: Remarks and Signature

Remarks
Date of Notice	04/09/2026
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)