Affiliate files Form 144 to sell 18,618 shares

Affiliate reported a proposed sale of 18,618 shares of Common Stock via Form 144.

Rhea-AI Filing Summary

Affiliate reported a proposed sale of 18,618 shares of Common Stock via Form 144. The sale is tied to an exercise of options under a registered plan with a trade date of 05/11/2026 and cash as the consideration method. The filing also records a prior sale of 7,174 shares on 03/17/2026 for $1,363,561.46 by Michael S. McNamara.

Insights

Securities Compliance Analyst

Form 144 notifies the market of an affiliate's proposed resale of shares.

Form 144 is a regulatory notice required when an affiliate or control person proposes to sell restricted or control securities. The filing here lists 18,618 shares to be sold following an exercise of options under a registered plan with a 05/11/2026 trade date.

Cash is specified as the consideration method; the filing does not state who will receive proceeds beyond the issuer linkage. Subsequent public filings will show whether the sale was executed.

Equity Capital Markets Advisor

This is a routine affiliate resale notice tied to option exercise.

The entry records an option exercise under a registered plan and a proposed resale of 18,618 shares. Prior sale activity of 7,174 shares on 03/17/2026 for $1,363,561.46 is included, giving context on recent affiliate liquidity.

Impact on outstanding float or share supply is not provided in the excerpt; execution and market impact depend on whether and how these shares are sold.

Key Figures

Proposed resale: 18,618 shares Prior sale: 7,174 shares Proceeds from prior sale: $1,363,561.46 +1 more

4 metrics

Proposed resale 18,618 shares Exercise of options under a registered plan, <date>05/11/2026</date>

Prior sale 7,174 shares Sold on <date>03/17/2026</date> by Michael S. McNamara

Proceeds from prior sale $1,363,561.46 Proceeds from the 7,174-share sale on <date>03/17/2026</date>

Trade date 05/11/2026 Date tied to the option exercise and proposed resale

Key Terms

Form 144, exercise of options under a registered plan, issuer

3 terms

Form 144 regulatory

"Form 144 notice of proposed sale by an affiliate"

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.

exercise of options under a registered plan financial

"Exercise of options under a registered plan with cash consideration"

issuer regulatory

"Listed as the transaction counterparty: Issuer"

FAQ

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

What does VICR's Form 144 disclose?

It discloses a proposed resale of 18,618 shares tied to option exercises dated 05/11/2026. The filing also notes a prior sale of 7,174 shares on 03/17/2026 for $1,363,561.46, reported by Michael S. McNamara.

Who is the reporting person in the VICR Form 144 filing?

The excerpt lists Michael S. McNamara as a reporting party for a prior sale of 7,174 shares on 03/17/2026. The Form 144 shows the proposed 18,618-share resale tied to an option exercise on 05/11/2026

What transaction type is tied to the 18,618 shares in the filing?

The shares are associated with an exercise of options under a registered plan with the listed trade date 05/11/2026. The filing specifies cash as the consideration method for that transaction.

Does the Form 144 show proceeds or beneficiary of the sale?

The filing specifies cash as the consideration method but does not name a payee or allocate proceeds in the provided excerpt. Details on who received proceeds are not included in the excerpt.

Has any related sale already occurred recently for VICR affiliates?

Yes. The filing records a prior sale by Michael S. McNamara of 7,174 shares on 03/17/2026 for $1,363,561.46, shown in the "Securities Sold During The Past 3 Months" section.

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

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Accepted by SEC EDGAR 05/11/2026 - 04:05 PM EDT 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	0001545814
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	(978) 470-2900
Name of Person for Whose Account the Securities are To Be Sold	MICHAEL S MCNAMARA
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	Officer
Relationship to Issuer	Director

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	18618	5752962.00	33863689	05/11/2026	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	05/11/2026	Exercise of options under a registered plan	Issuer			18618	05/11/2026	Cash

* 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
MICHAEL S MCNAMARA 25 Frontage Road Andover MA 01810	Common	03/17/2026	7174	1363561.46

144: Remarks and Signature

Remarks
Date of Notice	05/11/2026
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/ Michael McNamara
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)