MEC holder plans sale of 11,840 shares

An affiliated holder, Vanguard Marketing Corporation, has filed to sell up to 11,840 shares of MEC common stock on the NYSE, with an indicated aggregate market value of $309,379.20.

Rhea-AI Filing Summary

An affiliated holder, Vanguard Marketing Corporation, has filed to sell up to 11,840 shares of MEC common stock on the NYSE, with an indicated aggregate market value of $309,379.20. The proposed sale is dated August 6, 2026. The shares to be sold were acquired as Employer Grant Compensation in several grants, including 4,360 shares granted on February 28, 2024, 3,433 shares granted on February 28, 2025, and 4,047 shares granted on March 15, 2025.

Key Figures

Shares to be sold: 11,840 shares Aggregate market value: $309,379.20 Proposed sale date: 08/06/2026 +3 more

6 metrics

Shares to be sold 11,840 shares Common stock proposed for sale by Vanguard Marketing Corporation

Aggregate market value $309,379.20 Value associated with 11,840 MEC common shares to be sold

Proposed sale date 08/06/2026 Date tied to the proposed sale of MEC common stock on NYSE

Grant on 02/28/2024 4,360 shares Employer Grant Compensation of MEC common stock

Grant on 02/28/2025 3,433 shares Employer Grant Compensation of MEC common stock

Grant on 03/15/2025 4,047 shares Employer Grant Compensation of MEC common stock

Key Terms

Form 144, Employer Grant Compensation, Securities To Be Sold

3 terms

Form 144 regulatory

"144: Securities 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.

Employer Grant Compensation financial

"Common Stock | 02/28/2024 | Employer Grant Compensation"

Securities To Be Sold financial

"144: Securities To Be Sold"

FAQ

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

What stock sale is being proposed in MEC's Form 144 filing?

The filing reports a proposal to sell up to 11,840 shares of MEC common stock on the NYSE, with an indicated aggregate market value of $309,379.20 as part of a planned transaction.

Who is the selling security holder in MEC (MEC) Form 144?

The selling security holder is Vanguard Marketing Corporation, which holds MEC common stock to be sold on the NYSE, as disclosed in the Form 144 securities information section.

What is the planned sale date for the MEC (MEC) shares?

The proposed sale date for the 11,840 MEC shares is listed as August 6, 2026. This is the date associated with the intended transaction on the NYSE in the filing.

How were the MEC (MEC) shares in the Form 144 acquired?

The shares were acquired as Employer Grant Compensation, including 4,360 shares granted on February 28, 2024, 3,433 shares on February 28, 2025, and 4,047 shares on March 15, 2025.

What is the aggregate market value of MEC (MEC) shares to be sold?

The filing lists an aggregate market value of $309,379.20 for the proposed sale of 11,840 shares of MEC common stock to be transacted on the NYSE.

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

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Available on EDGAR 08/06/2026 - 12:17 PM Accepted by SEC EDGAR 08/06/2026 - 12:16 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	0001962754
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	Mayville Engineering Company, Inc.
SEC File Number	001-38894
Address of Issuer	715 SOUTH STREET MAYVILLE WISCONSIN 53050
Phone	920-387-4500
Name of Person for Whose Account the Securities are To Be Sold	Leuba Sean P
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

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	Vanguard Marketing Corporation 5951 Luckett Court Suite A1 El Paso TX 79932	11840	309379.20	25500331	08/06/2026	NYSE

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 Stock	02/28/2024	Employer Grant Compensation	Employer Grant			4360	02/28/2024	Employer Grant
Common Stock	02/28/2025	Employer Grant Compensation	Employer Grant			3433	02/28/2025	Employer Grant
Common Stock	03/15/2025	Employer Grant Compensation	Employer Grant			4047	03/15/2025	Employer Grant

* 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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	08/06/2026
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	Sean P Leuba
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)