Mayville Engineering Files 8-K Amendment

Ticker: MEC · Form: 8-K/A · Filed: Sep 15, 2025 · CIK: 1766368

Sentiment: neutral

Topics: amendment, financial-statements, exhibits

TL;DR

MEC filed an 8-K amendment on 9/15/25 for its 7/1/25 report, adding financial statements/exhibits.

AI Summary

Mayville Engineering Company, Inc. filed an amendment (8-K/A) on September 15, 2025, to its report originally dated July 1, 2025. This amendment pertains to financial statements and exhibits, with no specific financial figures or new material events detailed in the provided text.

Why It Matters

This filing is an amendment to a previous report, indicating a correction or addition to previously disclosed information, which could be important for investors to review for accuracy.

Risk Assessment

Risk Level: low — The filing is an amendment to a previous report and does not introduce new material financial information or events, suggesting a procedural update rather than a significant development.

Key Players & Entities

FAQ

What is the purpose of this 8-K/A filing?

This filing is an amendment (Amendment No. 1) to a previously filed Form 8-K, specifically to include financial statements and exhibits.

When was the original report filed or the earliest event reported?

The earliest event reported date for the original filing was July 1, 2025.

What is the filing date of this amendment?

This amendment (8-K/A) was filed on September 15, 2025.

What is the company's principal executive office address?

The principal executive offices are located at 135 S. 84th Street, Suite 300, Milwaukee, Wisconsin 53214.

What is the company's IRS Employer Identification Number?

The IRS Employer Identification Number for Mayville Engineering Company, Inc. is 39-0944729.

Filing Stats: 692 words · 3 min read · ~2 pages · Grade level 10.3 · Accepted 2025-09-15 15:30:24

Filing Documents

01. Financial Statements and Exhibits

Item 9.01. Financial Statements and Exhibits. (a) Financial Statements of Business Acquired The financial statements for Accu-Fab required by Item 9.01(a) of Form 8-K are attached as Exhibit 99.1 and Exhibit 99.2 to this Amendment No.1 and incorporated herein by reference. (b) Pro Forma Financial Information The unaudited pro forma consolidated combined financial information required by Item 9.01(b) of Form 8-K is attached as Exhibit 99.3 to this Amendment No. 1 to the Original Form 8-K and incorporated herein by reference. (c) Not applicable. (d) Exhibits. The exhibits listed in the exhibit index below are being filed herewith. EXHIBIT INDEX Exhibit Number Description 23.1 Consent of RSM US LLP, Independent Auditor for Accu-Fab, LLC. 99.1 The audited Financial Statements of Accu-Fab, LLC as of and for the years ended December 31, 2024, and 2023, and the related notes thereto. 99.2 The unaudited Financial Statements of Accu-Fab, LLC as of and for the three months ended March 31, 2025 and 2024, and the related notes thereto. 99.3 The unaudited Pro Forma Consolidated Combined Financial Information of Mayville Engineering Company, Inc as of and for the three months ended March 31, 2025, and the twelve-months ended December 31, 2024, and the related notes thereto. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this amendment to report to be signed on its behalf by the undersigned thereunto duly authorized. MAYVILLE ENGINEERING COMPANY, INC. Date: September 15, 2025 By: /s/ Rachele M. Lehr Rachele M. Lehr Chief Financial Officer

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