Patrizio Vinciarelli sells repeated blocks of stock (VICR) under 10b5-1 plan

Rhea-AI Filing Summary

Patrizio Vinciarelli reported multiple 10b5-1 sales of Common stock under Form 144, representing repeated dispositions in December 2025 and March 2026. The filings list blocks of 50,000 shares executed on several dates in 03/2026, plus smaller trades in 12/2025.

The transactions are described as 10b5-1 sales; cash‑flow counterparties or net proceeds recipients are not specified in the excerpt.

Insights

Corporate Governance Expert

Repeated 10b5-1 sales by an insider are routine liquidity events, not immediate governance alarms.

The filings list multiple block sales labeled 10b5-1, including several 50,000-share trades in 03/2026 and smaller disposals in 12/2025

Because these are executed under a trading plan, they typically indicate pre-arranged dispositions; subsequent filings may confirm plan terms or remaining holdings.

Equities Trading Analyst

Series of same‑sized trades suggests systematic planed selling rather than ad hoc market timing.

The record lists multiple identical 50,000 share sales on sequential dates in 03/2026, consistent with scheduled 10b5-1 execution. The excerpt shows additional December 2025 sales of varying sizes.

Market impact depends on trading method and remaining position; those details are not included here.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

Relationship to Issuer

Relationship to Issuer

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	9271000.00	33646426	03/17/2026	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	03/16/2026	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
10b5-1 Sales for PATRIZIO VINCIARELLI 25 Frontage Road Andover MA 01810	Common	12/19/2025	20000	2060326.12

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What did Patrizio Vinciarelli sell in the Form 144 for VICR?

The filing shows multiple 10b5-1 sales of Common stock, including repeated 50,000-share blocks in 03/2026 and smaller dispositions in 12/2025. The excerpt lists trade dates and share counts.

Were the March 2026 sales executed under a trading plan?

Yes. The transactions are described as 10b5-1 sales, indicating they were executed pursuant to a pre-arranged trading plan. The excerpt labels each listed trade as a 10b5-1 sale.

How many shares were sold on 03/04/2026 and 03/16/2026?

The excerpt lists a 50,000-share sale on 03/04/2026 and a 50,000-share sale on 03/16/2026. Each trade record pairs the date with the exact share count and a dollar amount.

Do the filings disclose proceeds recipients or use of proceeds?

No. The provided excerpt lists trade dates, share counts, and dollar amounts but does not state who received proceeds or how proceeds will be used. Cash‑flow treatment is not specified in the excerpt.

Are the December 2025 trades large compared with the March 2026 blocks?

The December 2025 entries include smaller blocks such as 1,883, 5,917, and 20,000 shares, while March 2026 shows repeated 50,000 blocks. The filing lists each trade with its specific share count and dollar amount.