Allspring discloses 10.1% stake in Mayville Engineering

Allspring Global Investments Holdings, LLC has filed an amended Schedule 13G reporting a significant ownership position in Mayville Engineering Co Inc common stock.

Accepted by SEC EDGAR 01/08/2026 - 11:46 AM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Allspring Global Investments Holdings, LLC has filed an amended Schedule 13G reporting a significant ownership position in Mayville Engineering Co Inc common stock. As of the event date of 12/31/2025, Allspring reports beneficial ownership of 2,052,613 shares, representing 10.1% of the outstanding common stock. The firm has sole power to vote 1,987,288 shares and sole power to dispose of 2,052,613 shares, with no shared voting or dispositive power.

The shares are owned of record by clients of one or more investment advisers controlled by Allspring, and those clients are entitled to dividends and sale proceeds. No individual client is reported to hold more than five percent of the class. Allspring certifies that the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Mayville Engineering.

FAQ

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

How much of Mayville Engineering Co Inc (MEC) does Allspring Global Investments Holdings, LLC report owning?

Allspring Global Investments Holdings, LLC reports beneficial ownership of 2,052,613 shares of Mayville Engineering Co Inc common stock, representing 10.1% of the class.

What type of filing did Allspring submit regarding its MEC position?

Allspring submitted an amended Schedule 13G (Amendment No. 4), which reports passive beneficial ownership of Mayville Engineering Co Inc common stock.

Who has voting and dispositive power over the MEC shares reported by Allspring?

Allspring reports sole voting power over 1,987,288 shares and sole dispositive power over 2,052,613 shares, with no shared voting or dispositive power.

Who ultimately benefits from the MEC shares held by Allspring-related advisers?

The securities are owned of record by clients of one or more investment advisers controlled by Allspring. These clients have the right to receive dividends and sale proceeds, and no client is known to have more than 5% of the class.

Does Allspring state any intent to influence control of Mayville Engineering Co Inc?

Allspring certifies that the MEC securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Mayville Engineering Co Inc.

Which Allspring entities are identified as owning at least 5% of MEC’s outstanding shares?

The exhibit lists Allspring Global Investments, LLC and Allspring Funds Management, LLC as entities that beneficially own 5% or greater of the outstanding shares of the reported security class.

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

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 4)

Mayville Engineering Co Inc

(Name of Issuer)

Common Stock SH

(Title of Class of Securities)

578605107

(CUSIP Number)

12/31/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 578605107

1

Names of Reporting Persons

Allspring Global Investments Holdings, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,987,288.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,052,613.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,052,613.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

10.1 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Mayville Engineering Co Inc
(b)	Address of issuer's principal executive offices: 715 SOUTH ST, MAYVILLE, US-WI, 53050, US
Item 2.
(a)	Name of person filing: Allspring Global Investments Holdings, LLC
(b)	Address or principal business office or, if none, residence: 1415 Vantage Park Drive, Charlotte, 28203, North Carolina, United States
(c)	Citizenship: DELAWARE
(d)	Title of class of securities: Common Stock SH
(e)	CUSIP No.: 578605107
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 2,052,613
(b)	Percent of class: 10.1 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1,987,288
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 2,052,613
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. The securities as to which this Schedule is filed are owned of record by clients of one or more investment Advisers identified in Exhibit A directly or indirectly owned by Allspring Global Investments Holdings, LLC. Those Clients have the right to receive, or the power to direct the receipt of, dividends from, or the proceeds for the sale of, such securities. No such client is known to have such right or power with respect to more than five percent of this class of securities, except as follows: None
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit A
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Allspring Global Investments Holdings, LLC

Signature:	Jennifer Grunberg
Name/Title:	Senior Compliance Manager
Date:	01/06/2026

Exhibit Information

Allspring Global Investments, LLC* - IA Allspring Funds Management, LLC* - IA *Entity beneficially owns 5% or greater of the outstanding shares of the security class being reported on this schedule 13G.