Vicor: Vinciarelli proposes $6.17M share sale

The listed proposed sale has an aggregate market value of $6,171,800.00; two 10b5-1 sales also appear in the three-month history.

Rhea-AI Filing Summary

A notice concerning VICOR Corporation identifies Patrizio Vinciarelli as the person for whose account a proposed sale of 20,000 common shares is reported, with an approximate sale date of October 2, 2026. The listed aggregate market value is $6,171,800.00. The three-month sale history also lists 20,000 shares sold on October 1, 2026, for $6,322,515.64, and 700 shares sold on July 6, 2026, for $211,680.98; both entries are labeled “10b5-1 Sales.”

Key Figures

Proposed sale: 20,000 shares Aggregate market value: $6,171,800.00 Shares outstanding: 34,389,014 shares +4 more

7 metrics

Proposed sale 20,000 shares Approximate sale date October 2, 2026

Aggregate market value $6,171,800.00 Proposed sale

Shares outstanding 34,389,014 shares As of October 2, 2026

October 1 sale 20,000 shares Reported in the three-month sale history

October 1 gross proceeds $6,322,515.64 Sale dated October 1, 2026

July 6 sale 700 shares Reported in the three-month sale history

July 6 gross proceeds $211,680.98 Sale dated July 6, 2026

Key Terms

Rule 144, 10b5-1 Sales, Founders Shares

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

10b5-1 Sales regulatory

"10b5-1 Sales for PATRIZIO VINCIARELLI"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Founders Shares financial

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

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.

How many VICR shares is Patrizio Vinciarelli proposing to sell?

The notice lists a proposed sale of 20,000 common shares for an approximate sale date of October 2, 2026, with an aggregate market value of $6,171,800.00.

What recent VICR share sales did Patrizio Vinciarelli report?

The three-month history lists 20,000 common shares sold on October 1, 2026, for gross proceeds of $6,322,515.64, and 700 common shares sold on July 6, 2026, for gross proceeds of $211,680.98. Both entries are labeled 10b5-1 Sales.

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

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Available on EDGAR 10/02/2026 - 04:21 PM Accepted by SEC EDGAR 10/02/2026 - 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	20000	6171800.00	34389014	10/02/2026	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			20000	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	10/01/2026	20000	6322515.64
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	07/06/2026	700	211680.98

144: Remarks and Signature

Remarks
Date of Notice	10/02/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	02/26/2026
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)