# EDGAR Filing Document

**Accession Number:** 0001766368
**File Stem:** 0001104659-25-106973
**Filing Date:** 2025-11
**Character Count:** 133751
**Document Hash:** 92bdeddf549122baa81eb0b90fd6bbd0
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-106973.hdr.sgml**: 20251105

**ACCESSION NUMBER**: 0001104659-25-106973

**CONFORMED SUBMISSION TYPE**: 10-Q

**PUBLIC DOCUMENT COUNT**: 88

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20251105

**DATE AS OF CHANGE**: 20251105

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Mayville Engineering Company, Inc.
- **CENTRAL INDEX KEY:** 0001766368
- **STANDARD INDUSTRIAL CLASSIFICATION:** METAL FORGING & STAMPINGS [3460]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 390944729
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 10-Q
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38894
- **FILM NUMBER:** 251453718

**BUSINESS ADDRESS:**
- **STREET 1:** 715 SOUTH STREET
- **CITY:** MAYVILLE
- **STATE:** WI
- **ZIP:** 53050
- **BUSINESS PHONE:** 920-387-4500

**MAIL ADDRESS:**
- **STREET 1:** 715 SOUTH STREET
- **CITY:** MAYVILLE
- **STATE:** WI
- **ZIP:** 53050

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Mayville Engineering Comapny, Inc.
- **DATE OF NAME CHANGE:** 20190130

?xml version='1.0' encoding='ASCII'? Mayville Engineering Company, Inc._September 30, 2025

[**Table of Contents**](#TOC)

------

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**WASHINGTON, DC 20549**

**FORM 10-Q**

**(Mark One)**

&nbsp;&nbsp;&nbsp;&nbsp;☒ **QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934** 

**For the quarterly period ended September 30, 2025**

**OR**

☐ **TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**

**For the transition period from &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; to**

**Commission File Number: 001-38894**

**Mayville Engineering Company, Inc.**

**(Exact Name of Registrant as Specified in its Charter)**

---

| | |
|:---|:---|
| **Wisconsin** | **39-0944729** |
| **(State or other jurisdiction of**<br>**incorporation or organization)** | **(I.R.S. Employer**<br>**Identification No.)** |
| **135 S. 84th Street, Suite 300**<br>**Milwaukee, Wisconsin** | **53214** |
| **(Address of principal executive offices)** | **(Zip Code)** |

---

**Registrant's telephone number, including area code: (414) 381-2860**

**Securities registered pursuant to Section 12(b) of the Act:**

---

| | | |
|:---|:---|:---|
| ('Unnamed: 0_level_0', '**Title of each class**<br>') | ('&nbsp;&nbsp;<br>', '&nbsp;&nbsp;&nbsp;**Trading**<br>**Symbol(s)**<br>') | ('&nbsp;&nbsp;<br>', '&nbsp;&nbsp;&nbsp;**Name of each exchange**<br>**on which registered**<br>') |
| **Common Stock, no par value** | **MEC** | **New York Stock Exchange** |

---

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒&nbsp;&nbsp;&nbsp;&nbsp;No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒&nbsp;&nbsp;&nbsp;&nbsp;No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

---

| | | | |
|:---|:---|:---|:---|
| Large accelerated filer | ☐ | Accelerated filer | ☒ |
| Non-accelerated filer | ☐ | Smaller reporting company | ☐ |
| Emerging growth company | ☐ |  |  |

---

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐&nbsp;&nbsp;&nbsp;&nbsp;No ☒

As of October 31, 2025, the registrant had 20,318,370 shares of common stock, no par value per share, outstanding.

------

[**Table of Contents**](#TOC)

**Table of Contents**

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;.1 | **Page** |
| [**PART I.**](#PARTIFINANCIALINFORMATION_56011) | [FINANCIAL INFORMATION](#PARTIFINANCIALINFORMATION_56011) | 5 |
| [Item 1.](#Item1FinancialStatements_843299) | [Financial Statements (Unaudited)](#Item1FinancialStatements_843299) | 5 |
|  | [Condensed Consolidated Balance Sheets](#BalanceSheets_13570) | 5 |
|  | [Condensed Consolidated Statements of Comprehensive Income (Loss)](#ComprehensiveIncome_176662) | 6 |
|  | [Condensed Consolidated Statements of Cash Flows](#CashFlows_533286) | 7 |
|  | [Condensed Consolidated Statements of Shareholders' Equity](#Equity_459798)  | 9 |
|  | [Notes to Condensed Consolidated Financial Statements](#NotestoUnauditedCondensedConsolidatedFin) | 10 |
| [Item 2.](#Item2ManagementsDiscussionandAnalysisofF) | [Management's Discussion and Analysis of Financial Condition and Results of Operations](#Item2ManagementsDiscussionandAnalysisofF) | 25 |
| [Item 3.](#Item3QuantitativeandQualitativeDisclosur) | [Quantitative and Qualitative Disclosures About Market Risk](#Item3QuantitativeandQualitativeDisclosur) | 33 |
| [Item 4.](#Item4ControlsandProcedures_652992) | [Controls and Procedures](#Item4ControlsandProcedures_652992) | 34 |
| [**PART II.**](#PARTIIOTHERINFORMATION_26538) | [OTHER INFORMATION](#PARTIIOTHERINFORMATION_26538) | 36 |
| [Item 1.](#Item1LegalProceedings_748673) | [Legal Proceedings](#Item1LegalProceedings_748673) | 36 |
| [Item 1A.](#Item1ARiskFactors_814905) | [Risk Factors](#Item1ARiskFactors_814905) | 36 |
| [Item 2.](#Item2UnregisteredSalesofEquitySecurities) | [Unregistered Sales of Equity Securities and Use of Proceeds](#Item2UnregisteredSalesofEquitySecurities) | 36 |
| [Item 5.](#Item5OtherInformation) | [Other Information](#Item5OtherInformation) | 36 |
| [Item 6.](#Item6Exhibits_435593) | [Exhibits](#Item6Exhibits_435593) | 37 |
| [Signatures](#SIGNATURES_740181) |  | 38 |

---

[**Table of Contents**](#TOC)

#### CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS
Certain matters discussed in this Quarterly Report on Form 10-Q contain forward-looking statements that involve risks and uncertainties, such as statements related to future events, business strategy, future performance, future operations, financial position, estimated revenues and losses, projected costs, prospects, plans and objectives of management. All statements other than statements of historical fact may be forward-looking statements. Forward-looking statements are often, but not always, identified by the use of words such as "seek," "anticipate," "plan," "continue," "estimate," "expect," "may," "will," "project," "predict," "potential," "targeting," "intend," "could," "might," "should," "believe" and similar expressions or their negative. Forward-looking statements should not be read as a guarantee of future performance or results, and will not necessarily be accurate indications of the times at, or by, which such performance or results will be achieved. Forward-looking statements are based on management's belief, based on currently available information, as to the outcome and timing of future events. These statements involve estimates, assumptions, known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those expressed in such forward-looking statements. Mayville Engineering Company, Inc. (MEC, the Company, we, our, us or similar terms) believes the expectations reflected in the forward-looking statements contained in this Quarterly Report on Form 10-Q are reasonable, but no assurance can be given that these expectations will prove to be correct. Forward-looking statements should not be unduly relied upon.

Important factors that could cause actual results or events to differ materially from those expressed in forward-looking statements include, but are not limited to, those described in "Risk Factors" in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2024, filed with the Securities and Exchange Commission (the SEC) on March 6, 2025, as such may be amended or supplemented in Part II, Item 1A of our subsequently filed Quarterly Reports on Form 10-Q (including this report) and the following:

● Macroeconomic conditions, including inflation, elevated interest rates, labor availability, material cost pressures and inconsistent customer demand, have had, and may continue to have, a negative impact on our business, financial condition, cash flows and results of operations (including future uncertain impacts);

● risks relating to developments in the industries in which our customers operate;

● risks related to scheduling production accurately and maximizing efficiency;

● our ability to realize net sales represented by our awarded business;

● failure to compete successfully in our markets;

● our ability to maintain our manufacturing, engineering and technological expertise;

● the loss of any of our large customers or the loss of their respective market shares;

● volatility in the prices or availability of raw materials critical to our business;

● geopolitical and economic developments, including foreign trade relations and associated tariffs;

● risks related to entering new markets;

● our ability to recruit and retain our key executive officers, managers and trade-skilled personnel;

● manufacturing risks, including delays and technical problems, issues with third-party suppliers, environmental risks and applicable statutory and regulatory requirements;

● our ability to successfully identify or integrate acquisitions;

● our ability to develop new and innovative processes and gain customer acceptance of such processes;

● risks related to our information technology systems and infrastructure;

[**Table of Contents**](#TOC)

● results of legal disputes, including product liability, intellectual property infringement and other claims;

● risks associated with our capital-intensive industry;

● risks related to our treatment as an S Corporation prior to the consummation of our initial public offering of common stock (IPO);

● risks related to our employee stock ownership plan's treatment as a tax-qualified retirement plan; and

● our ability to remediate the material weakness in internal control over financial reporting identified in preparing our financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2024, and to subsequently maintain effective internal control over financial reporting.

These factors are not necessarily all of the important factors that could cause actual results or events to differ materially from those expressed in forward-looking statements. Other unknown or unpredictable factors could also cause actual results or events to differ materially from those expressed in the forward-looking statements. All forward-looking statements attributable to us are qualified in their entirety by this cautionary statement. Forward-looking statements speak only as of the date hereof. We undertake no obligation to update or revise any forward-looking statements after the date on which any such statement is made, whether as a result of new information, future events or otherwise, except as required by federal securities laws.

[**Table of Contents**](#TOC)

#### PART I—FINANCIAL INFORMATION

#### Item 1. Financial Statements.
**Mayville Engineering Company, Inc. and Subsidiaries**

**Condensed Consolidated Balance Sheets**

*(in thousands, except share amounts)*

*(unaudited)*

---

| | | |
|:---|:---|:---|
|  | **September 30,** <br>**2025** | **December 31,** <br>**2024** |
| **ASSETS** |  |  |
| &nbsp;&nbsp;Cash and cash equivalents | $1217 | $206 |
| &nbsp;&nbsp;Receivables, net of allowances for doubtful accounts of $342 at September 30, 2025<br>and $248 at December 31, 2024 | 69183 | 49782 |
| &nbsp;&nbsp;Inventories, net | 61219 | 54756 |
| &nbsp;&nbsp;Tooling in progress | 4646 | 4761 |
| &nbsp;&nbsp;Prepaid expenses and other current assets | 6020 | 3439 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total current assets** | 142285 | 112944 |
| &nbsp;&nbsp;Property, plant and equipment, net | 153286 | 156528 |
| &nbsp;&nbsp;Assets held for sale | 1402 | 1402 |
| &nbsp;&nbsp;Goodwill | 140289 | 92650 |
| &nbsp;&nbsp;Intangible assets, net | 114343 | 51734 |
| &nbsp;&nbsp;Operating lease assets | 32002 | 28615 |
| &nbsp;&nbsp;Other long-term assets | 1975 | 1697 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total assets** | $585582 | $445570 |
| **LIABILITIES AND SHAREHOLDERS' EQUITY** |  |  |
| &nbsp;&nbsp;Accounts payable | $53069 | $39119 |
| &nbsp;&nbsp;Current portion of operating lease obligation | 6644 | 4914 |
| &nbsp;&nbsp;Accrued liabilities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Salaries, wages, and payroll taxes | 6196 | 5094 |
| &nbsp;&nbsp;&nbsp;&nbsp;Bonuses and deferred compensation | 2505 | 4626 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other current liabilities | 9611 | 10839 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Total current liabilities** | 78025 | 64592 |
| &nbsp;&nbsp;Bank revolving credit notes | 211858 | 79725 |
| &nbsp;&nbsp;Operating lease obligation, less current maturities | 27159 | 25412 |
| &nbsp;&nbsp;Deferred compensation, less current portion | 4672 | 4719 |
| &nbsp;&nbsp;Deferred income tax liability | 15218 | 16831 |
| &nbsp;&nbsp;Other long-term liabilities | 3880 | 2538 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Total liabilities** | $340812 | $193817 |
| &nbsp;&nbsp;Commitments and contingencies (see Note 9) |  |  |
| &nbsp;&nbsp;Common shares, no par value, 75,000,000 authorized, 22,505,704 shares issued at<br>September 30, 2025 and 22,300,106 at December 31, 2024 |  |  |
| &nbsp;&nbsp;Additional paid-in-capital | 208452 | 207076 |
| &nbsp;&nbsp;Retained earnings | 56334 | 60086 |
| &nbsp;&nbsp;Treasury shares at cost, 2,187,334 shares at September 30, 2025 and 1,883,198 at <br>December 31, 2024 | (20016) | (15409) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Total shareholders' equity** | 244770 | 251753 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Total liabilities and shareholders' equity** | $585582 | $445570 |

---

The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.

[**Table of Contents**](#TOC)

**Mayville Engineering Company, Inc. and Subsidiaries**

**Condensed Consolidated Statements of Comprehensive Income (Loss)**

*(in thousands, except share amounts and per share data)*

*(unaudited)*

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Three Months Ended**  | **Three Months Ended**  | **Nine Months Ended**  | **Nine Months Ended**  |
|  | **September 30,**  | **September 30,**  | **September 30,**  | **September 30,**  |
|  | **2025** | **2024** | **2025** | **2024** |
| Net sales | $144310 | $135392 | $412217 | $460298 |
| Cost of sales | 128371 | 118297 | 367126 | 399993 |
| Amortization of intangible assets | 3125 | 1733 | 6591 | 5200 |
| Bonuses and deferred compensation | 2221 | 2076 | 7071 | 10010 |
| Other selling, general and administrative expenses | 10545 | 7559 | 29727 | 23589 |
| **Income from operations** | 48 | 5727 | 1702 | 21506 |
| Interest expense | (3430) | (2653) | (6395) | (8977) |
| Income (loss) before taxes | (3382) | 3074 | (4693) | 12529 |
| Income tax expense (benefit) | (707) | 100 | (941) | 2532 |
| **Net income (loss) and comprehensive income (loss)** | $(2675) | $2974 | $(3752) | $9997 |
| **Earnings (loss) per share:** |  |  |  |  |
| Basic | $(0.13) | $0.14 | $(0.18) | $0.49 |
| Diluted | $(0.13) | $0.14 | $(0.18) | $0.48 |
| **Weighted average shares outstanding:** |  |  |  |  |
| Basic | 20423858 | 20715275 | 20485995 | 20601702 |
| Diluted | 20683060 | 21123494 | 20735100 | 20893316 |

---

The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.

[**Table of Contents**](#TOC)

**Mayville Engineering Company, Inc. and Subsidiaries**

**Condensed Consolidated Statements of Cash Flows**

*(in thousands)*

*(unaudited)*

---

| | | |
|:---|:---|:---|
|  | **Nine Months Ended**  | **Nine Months Ended**  |
|  | **September 30,**  | **September 30,**  |
|  | **2025** | **2024** |
| **CASH FLOWS FROM OPERATING ACTIVITIES** |  |  |
| &nbsp;&nbsp;Net income (loss) | $(3752) | $9997 |
| &nbsp;&nbsp;Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Depreciation | 23630 | 22927 |
| &nbsp;&nbsp;&nbsp;&nbsp;Amortization | 6591 | 5200 |
| &nbsp;&nbsp;&nbsp;&nbsp;Allowance for doubtful accounts | 71 | (255) |
| &nbsp;&nbsp;&nbsp;&nbsp;Inventory excess and obsolescence reserve | (208) | (30) |
| &nbsp;&nbsp;&nbsp;&nbsp;Stock-based compensation expense | 2953 | 3847 |
| &nbsp;&nbsp;&nbsp;&nbsp;Gain on disposal of property, plant and equipment | (1) | (177) |
| &nbsp;&nbsp;&nbsp;&nbsp;Deferred compensation | 1100 | 752 |
| &nbsp;&nbsp;&nbsp;&nbsp;Non-cash lease expense | 4334 | 4034 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other non-cash adjustments | 280 | 447 |
| &nbsp;&nbsp;Changes in operating assets and liabilities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts receivable | (5356) | 3355 |
| &nbsp;&nbsp;&nbsp;&nbsp;Inventories | (1661) | 6639 |
| &nbsp;&nbsp;&nbsp;&nbsp;Tooling in progress | 115 | (169) |
| &nbsp;&nbsp;&nbsp;&nbsp;Prepaids and other current assets | (1933) | (1694) |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts payable | 9960 | 534 |
| &nbsp;&nbsp;&nbsp;&nbsp;Deferred income taxes | (1613) | 1454 |
| &nbsp;&nbsp;&nbsp;&nbsp;Operating lease obligations | (4239) | (3792) |
| &nbsp;&nbsp;&nbsp;&nbsp;Accrued liabilities | (5090) | (1222) |
| &nbsp;&nbsp;Net cash provided by operating activities | 25181 | 51847 |
| **CASH FLOWS FROM INVESTING ACTIVITIES** |  |  |
| &nbsp;&nbsp;Purchases of property, plant and equipment | (8430) | (9753) |
| &nbsp;&nbsp;Proceeds from sale of property, plant and equipment | 22 | 108 |
| &nbsp;&nbsp;Payment for acquisition, net of cash acquired | (140062) |  |
| &nbsp;&nbsp;Net cash used in investing activities | (148470) | (9645) |
| **CASH FLOWS FROM FINANCING ACTIVITIES** |  |  |
| &nbsp;&nbsp;Proceeds from bank revolving credit notes | 1147941 | 514466 |
| &nbsp;&nbsp;Payments on bank revolving credit notes | (1015808) | (550914) |
| &nbsp;&nbsp;Repayments of other long-term debt |  | (306) |
| &nbsp;&nbsp;Payments of financing costs | (793) |  |
| &nbsp;&nbsp;Shares withheld for employees' taxes | (1577) | (3816) |
| &nbsp;&nbsp;Purchase of treasury stock | (4607) | (1996) |
| &nbsp;&nbsp;Payments on finance leases | (856) | (475) |
| &nbsp;&nbsp;Proceeds from the exercise of stock options |  | 345 |
| &nbsp;&nbsp;Net cash provided by (used in) financing activities | 124300 | (42696) |
| Net increase (decrease) in cash and cash equivalents | 1011 | (494) |
| Cash and cash equivalents at beginning of period | 206 | 672 |
| Cash and cash equivalents at end of period  | $1217 | $178 |

---

[**Table of Contents**](#TOC)

**Mayville Engineering Company, Inc. and Subsidiaries**

**Condensed Consolidated Statements of Cash Flows**

*(in thousands)*

*(unaudited)*

---

| | | |
|:---|:---|:---|
|  | **Nine Months Ended**  | **Nine Months Ended**  |
|  | **September 30,**  | **September 30,**  |
|  | **2025** | **2024** |
| **Supplemental disclosure of cash flow information:** |  |  |
| &nbsp;&nbsp;Cash paid for interest | $5953 | $8032 |
| &nbsp;&nbsp;Cash paid for income taxes | $2329 | $1205 |
| &nbsp;&nbsp;Non-cash property, plant and equipment | $921 | $1376 |
| &nbsp;&nbsp;In conjunction with the acquisition, assets acquired and liabilities assumed were as follows: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Assets acquired, net of cash acquired | $149553 | $— |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Liabilities assumed | (9491) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash paid for acquisition, net of cash acquired | $140062 | $— |

---

The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.

[**Table of Contents**](#TOC)

**Mayville Engineering Company, Inc. and Subsidiaries**

**Condensed Consolidated Statements of Shareholders' Equity**

*(in thousands)*

*(unaudited)*

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Shareholders' Equity** | **Shareholders' Equity** | **Shareholders' Equity** | **Shareholders' Equity** |
|  | **Additional** <br>**Paid-in-Capital** | **Treasury** <br>**Shares** | **Retained** <br>**Earnings** | <br>**Total** |
| Balance as of December 31, 2024 | $207076 | $(15409) | $60086 | $251753 |
| Net income |  |  | 20 | 20 |
| Purchase of treasury stock |  | (1747) |  | (1747) |
| Stock-based compensation | 1101 |  |  | 1101 |
| Restricted stock units net of employee tax withholding | (1170) |  |  | (1170) |
| Balance as of March 31, 2025 | $207007 | $(17156) | $60106 | $249957 |
| Net loss |  |  | (1097) | (1097) |
| Purchase of treasury stock |  | (2860) |  | (2860) |
| Stock-based compensation | 1007 |  |  | 1007 |
| Stock options exercised net of employee tax withholding | (164) |  |  | (164) |
| Balance as of June 30, 2025 | $207850 | $(20016) | $59009 | $246843 |
| Net loss |  |  | (2675) | (2675) |
| Stock-based compensation | 845 |  |  | 845 |
| Restricted stock units net of employee tax withholding | (243) |  |  | (243) |
| Balance as of September 30, 2025 | $208452 | $(20016) | $56334 | $244770 |
|  | **Shareholders' Equity** | **Shareholders' Equity** | **Shareholders' Equity** | **Shareholders' Equity** |
|  | **Additional**  | **Treasury**  | **Retained**  |  |
|  | **Paid-in-Capital** | **Shares** | **Earnings** | **Total** |
| Balance as of December 31, 2023 | $205373 | $(9513) | $34118 | $229978 |
| Net income |  |  | 3241 | 3241 |
| Stock-based compensation | 1157 |  |  | 1157 |
| Stock options exercised net of employee tax withholding | 185 |  |  | 185 |
| Restricted stock units net of employee tax withholding | (524) |  |  | (524) |
| Balance as of March 31, 2024 | $206191 | $(9513) | $37359 | $234037 |
| Net income |  |  | 3782 | 3782 |
| Purchase of treasury stock |  | (998) |  | (998) |
| Stock-based compensation | 1338 |  |  | 1338 |
| Stock options exercised net of employee tax withholding | (75) |  |  | (75) |
| Balance as of June 30, 2024 | $207454 | $(10511) | $41141 | $238084 |
| Net income |  |  | 2974 | 2974 |
| Purchase of treasury stock |  | (998) |  | (998) |
| Stock-based compensation | 1352 |  |  | 1352 |
| Stock options exercised net of employee tax withholding | (2771) |  |  | (2771) |
| Restricted stock units net of employee tax withholding | (285) |  |  | (285) |
| Balance as of September 30, 2024 | $205750 | $(11509) | $44115 | $238356 |

---

The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.

[**Table of Contents**](#TOC)

**Mayville Engineering Company, Inc. and Subsidiaries**

**Notes to Condensed Consolidated Financial Statements**

*(in thousands except share amounts, per share data, years and ratios)*

*(unaudited)*

#### Note 1. Basis of presentation
The interim unaudited Condensed Consolidated Financial Statements of Mayville Engineering Company, Inc. and subsidiaries (MEC, the Company, we, our, us or similar terms) presented here have been prepared in accordance with the accounting principles generally accepted in the United States of America (GAAP) and with instructions to Form 10-Q and Article 10 of Regulation S-X. They reflect all adjustments which are, in the opinion of management, necessary for a fair presentation of the results of operations and financial position for the interim unaudited periods presented. All intercompany balances and transactions have been eliminated in consolidation.

Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted. These interim unaudited Condensed Consolidated Financial Statements should be read in conjunction with the Company's consolidated financial statements and notes thereto for the year ended December 31, 2024, included in the Company's Annual Report on Form 10-K. A summary of the Company's significant accounting policies is included in the Company's 2024 financial statements in the Annual Report on Form 10-K. The Company followed these policies in preparation of the interim unaudited Condensed Consolidated Financial Statements except for new accounting pronouncements adopted as described below.

***Nature of Operations***

MEC is a leading U.S.-based, vertically-integrated, value-added manufacturing partner providing a full suite of manufacturing solutions from concept to production, including design, prototyping and tooling, fabrication, aluminum extrusion, coating, assembly and aftermarket components. Our customers operate in diverse end markets, including heavy- and medium-duty commercial vehicles, construction & access equipment, powersports, data center & critical power, agriculture, military and other end markets. Founded in 1945 and headquartered in Milwaukee, Wisconsin, we are a leading Tier I U.S. supplier of highly engineered components to original equipment manufacturer (OEM) customers with leading positions in their respective markets. The Company maintains 27 facilities, of which 26 are in operation, located in Arkansas, Illinois, North Carolina, Michigan, Mississippi, Ohio, Pennsylvania, Virginia, and Wisconsin. Our engineering expertise and technical know-how allow us to add value through every product redevelopment cycle.

Our one operating segment focuses on producing metal components that are used in a broad range of heavy- and medium-duty commercial vehicles, construction & access equipment, powersports, data center & critical power, agricultural, military and other products.

***Recent Accounting Pronouncements***

In September 2025, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2025-06, *Intangibles – Goodwill and Other-Internal-Use Software,* amending Accounting Standards Codification (ASC) 350*.* The amendment removes all references to prescriptive and sequential software development stages. In addition, the amendment also requires consideration whether there is significant uncertainty associated with the development activities of the software during evaluation of probable-to-complete recognition threshold. ASU 2025-06 is effective for interim and annual periods beginning after December 15, 2027. Entities may adopt the guidance using either a prospective approach (including a modified transition approach) or retrospective approach. Early adoption is permitted. The Company is evaluating the potential impact of this guidance on the consolidated financial statements.

In November 2024, the FASB issued ASU 2024-03, *Expense Disaggregation Disclosures,* amending ASC 220, *Income Statement – Reporting Comprehensive Income.* The amendment requires an entity to provide a disclosure within the financial statement footnotes showing the disaggregation of certain expenses included in relevant expense captions on the consolidated income statement, with a qualitative description of the amounts that are not separately disaggregated quantitatively. The guidance also requires disclosure of the total amount of selling expenses and, in annual reporting periods, an entity's definition of selling expenses. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026 and for interim periods beginning after December 15, 2027. The guidance is applied on a prospective basis, with a retrospective option and allows for early adoption. The Company is evaluating the potential impact of this guidance on the consolidated financial statements.

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In December 2023, the FASB issued ASU 2023-09, *Improvements to Income Tax Disclosures*, amending ASC 740, *Income Taxes.* The amendment is intended to enhance the transparency about income tax information through improvements to income tax disclosures primarily related to the rate reconciliation and income taxes paid information. The amendments require that on an annual basis, entities disclose specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. In addition, the amendments require that entities disclose additional information about income taxes paid as well as additional disclosures of pretax income and income tax expense and remove the requirement to disclose certain items that are no longer considered cost beneficial or relevant. ASU 2023-09 is effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The Company will adopt this standard in the fourth quarter of 2025 and we believe this standard will not have a material impact on our consolidated financial statements.

#### Note 2. Acquisition
On July 1, 2025, the Company acquired 100% of the membership interests of Accu-Fab, LLC (Accu-Fab). The acquisition was consummated in accordance with the terms of the Purchase Agreement dated May 23, 2025, among the Company, Accu-Fab, and Tide Rock YieldCo, LLC (the Seller). The purchase price of the acquisition was $140,500, subject to customary adjustments for the amount of cash, indebtedness, net working capital, and certain expenses of Accu-Fab as of the closing. The acquisition of Accu-Fab was structured as a stock purchase for accounting purposes. As of the closing of the acquisition, after taking into account the estimated adjustments, the Company paid the Seller a total net consideration of $141,185. The Company financed the acquisition by borrowing under its amended and restated credit agreement as described in Note 4 - Debt in the Notes to the Condensed Consolidated Financial Statements.

With locations in Wheeling, Illinois and Raleigh, North Carolina, Accu-Fab is a vertically integrated manufacturing partner providing technology driven, cutting edge metal fabrication solutions to large OEMs. Accu-Fab offers value-added services including design, engineering, sheet metal fabrication and integration, and specialized finishing. The acquisition enhances MEC's strategic position by broadening its customer base and accelerating its entry into the rapidly growing data center & critical power infrastructure end markets.

The Company accounted for the acquisition using the acquisition method of accounting in accordance with ASC 805 - *Business Combinations*, with MEC being the acquiring entity. Transaction costs related to the acquisition were expensed as incurred within other selling, general, and administrative expenses and totaled $887 and $3,265 for the three and nine months ended September 30, 2025, respectively. The net sales and operating income of Accu-Fab, which is consolidated in MEC's financial statements presented herein, since July 1, 2025 were $21,246 and $4,225, respectively, for the three months and nine months ended September 30, 2025.

The aggregate purchase price has been allocated to the assets acquired and liabilities assumed based on their preliminary estimated fair values as of the acquisition date. The estimate of the excess purchase price over the preliminary estimated fair value of net tangible assets acquired was allocated to identifiable intangible assets and goodwill. The Company engaged an independent third party to assist with the identification and valuation of the acquired assets, including intangible assets. Management makes significant estimates and assumptions when determining the fair value of assets acquired and liabilities assumed. These estimates include, but are not limited to, discount rates, projected future net sales, projected future expected cash flows, useful lives, attrition rates, and growth rates. These measures are based on significant Level 3 inputs not observable in the market.

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The following table is a summary of the assets acquired, liabilities assumed, and net cash consideration paid for the acquisition of Accu-Fab. The allocation is considered preliminary and subject to finalization within one year from the acquisition date:

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| | |
|:---|:---|
|  | **Balance Sheet**<br>**Allocation**<br>**As of July 1,**<br>**2025** |
| Cash and cash equivalents | $1123 |
| Accounts receivable, net | 14118 |
| Inventory | 4594 |
| Prepaid expenses and other current assets | 256 |
| Property, plant and equipment | 9811 |
| Operating lease assets | 3928 |
| Intangible assets |  |
| &nbsp;&nbsp;Customer relationships | 67000 |
| &nbsp;&nbsp;Non-compete agreements | 2200 |
| Other long-term assets | 7 |
| Goodwill | 47639 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total assets acquired | 150676 |
| Accounts payable | (4101) |
| Lease liabilities, current | (1231) |
| Accrued liabilities: |  |
| &nbsp;&nbsp;Salaries, wages, and payroll taxes | (661) |
| &nbsp;&nbsp;Bonuses and deferred compensation | (305) |
| &nbsp;&nbsp;Other current liabilities | (275) |
| Lease liabilities, non-current | (2698) |
| Other long-term liabilities | (220) |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities assumed | (9491) |
| **Total consideration** | $141185 |

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Inventory was valued at its estimated fair value, which is defined as expected sales price, less costs to sell, plus a reasonable margin for selling effort. The valuation resulted in an inventory fair value step-up of $591 and was fully expensed and reflected in cost of sales on the Condensed Consolidated Statement of Comprehensive Income (Loss) during the three and nine months ended September 30, 2025.

Property, plant and equipment was valued at its estimated fair value using the cost, market and sales comparison approaches. The valuation resulted in a property, plant and equipment fair value step-up of $5,326. Depreciation on property, plant and equipment is computed on a straight-line basis over the estimated useful life of the respective assets.

The Company also recorded $67,000 of customer relationships intangible assets and $2,200 of non-compete agreement intangible assets. The purchase price allocated to these assets was based on management's forecasted cash inflows and outflows and the multi-period excess earnings method for customer relationships and the with and without method for the non-compete agreements. Amortization expense related to these intangible assets is recorded on a straight-line basis and reflected in amortization of intangible assets on the Condensed Consolidated Statements of Comprehensive Income (Loss).

The purchase price of Accu-Fab exceeded the preliminary estimated fair value of identifiable net assets and accordingly, the difference was allocated to goodwill, all of which is tax deductible. Goodwill will be tested for impairment at least annually, or more frequently if events or changes in circumstances indicate that the asset may be impaired, in accordance with ASC 350 – *Intangibl*es. The goodwill recognized primarily reflects expected synergies from integrating Accu-Fab's operations into the Company's existing manufacturing platform, the assembled workforce, and other intangible assets that do not meet the criteria for separate recognition under ASC 805.

The Company believes that the information gathered to date provides a reasonable basis for estimating the fair values of assets acquired and liabilities assumed; however, the purchase price allocations are preliminary as we continue to gather the necessary information to finalize our fair value estimates and provisional amounts. Provisional amounts include items related to working capital

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adjustments, intangible assets, indemnification of assets and liabilities and deferred taxes. The net working capital true-up remains subject to final agreement with the Seller and may result in future adjustments to the purchase price. During the three months ended September 30, 2025, the Company did not adjust the purchase price related to working capital adjustments.

The Company has recorded preliminary estimates for the items noted in the preceding paragraph and will record adjustments, if any, to the preliminary amounts upon finalization of the respective valuations. Such changes are not expected to be significant. The Company expects to complete the purchase price allocation as soon as practicable but no later than one year from the acquisition date.

***Pro Forma Financial Information (Unaudited)***

In accordance with ASC 805, the following unaudited pro forma combined results of operations have been prepared and presented to give effect to the Accu-Fab acquisition as if it had occurred on January 1, 2024, the beginning of the comparable period, applying certain assumptions and pro forma adjustments. These pro forma adjustments primarily relate to the estimated depreciation expense associated with the fair value of the acquired property, plant, and equipment, amortization of identifiable intangible assets, interest expense related to additional debt needed to fund the acquisition, and the tax impact of these adjustments. Additionally, the pro forma adjustments exclude non-recurring expenses related to transaction costs, which were expensed as incurred, and include the sale of stepped-up inventory. The unaudited pro forma consolidated results are provided for illustrative purposes only, are not indicative of the Company's actual consolidated results of operations or consolidated financial position and do not reflect any revenue and operating synergies or cost savings that may result from the acquisition.

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **Three Months Ended**  | **Three Months Ended**  | **Nine Months Ended**  | **Nine Months Ended**  |
|  | **September 30,**  | **September 30,**  | **September 30,**  | **September 30,**  |
|  | **2025** | **2024** | **2025** | **2024** |
| Net sales | $144310 | $150478 | $446191 | $506371 |
| Net income (loss) | $(2084) | $2110 | $1723 | $8848 |

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#### Note 3. Select balance sheet data

#### Inventory
Inventories are stated at the lower of cost, determined on the first-in, first-out method, or net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. Work-in-process and finished goods are valued at production costs consisting of material, labor, and overhead.

Inventories as of September 30, 2025 and December 31, 2024 consist of:

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| | | |
|:---|:---|:---|
|  | **September 30,** <br>**2025** | **December 31,** <br>**2024** |
| Finished goods and purchased parts | $29839 | $25952 |
| Raw materials | 21842 | 19386 |
| Work-in-process | 9538 | 9418 |
| &nbsp;&nbsp;Total | $61219 | $54756 |

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#### Property, plant and equipment
Property, plant and equipment as of September 30, 2025 and December 31, 2024 consist of:

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| | | | |
|:---|:---|:---|:---|
|  | **Useful Lives**<br> **Years** | **September 30,** <br>**2025** | **December 31,** <br>**2024** |
| Land | Indefinite | $2564 | $2564 |
| Land improvements | 15-39 | 4740 | 4261 |
| Building and building improvements | 15-39 | 80286 | 79553 |
| Machinery, equipment and tooling | 3-10 | 325387 | 310300 |
| Vehicles | 5 | 4978 | 4377 |
| Office furniture and fixtures | 3-7 | 25420 | 23034 |
| Construction in progress | N/A | 2861 | 3263 |
| &nbsp;&nbsp;Total property, plant and equipment, gross |  | 446236 | 427352 |
| Less accumulated depreciation |  | 292950 | 270824 |
| &nbsp;&nbsp;Total property, plant and equipment, net |  | $153286 | $156528 |

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Depreciation expense was $8,012 and $7,748 for the three months ended September 30, 2025 and 2024, respectively, and $23,630 and $22,927 for the nine months ended September 30, 2025 and 2024, respectively.

Additionally, the Company completed the closure of its Wautoma, WI manufacturing facility during the fourth quarter of the prior year period. The net amount of property, plant and equipment associated with the facility was $1,402, which is classified in assets held for sale on the Condensed Consolidated Balance Sheets as of September 30, 2025 and December 31, 2024.

#### Goodwill
The following table sets forth the changes in the carrying amount of goodwill as of September 30, 2025. The carrying value of goodwill was increased by $47,639 during the nine months ended September 30, 2025, related to the acquisition of Accu-Fab.

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| | |
|:---|:---|
| Balance as of December 31, 2024 | $92650 |
| Acquisition | 47639 |
| Balance as of September 30, 2025 | $140289 |

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#### Intangible Assets
The following is a listing of definite-lived intangible assets, the useful lives in years (amortization period) and accumulated amortization as of September 30, 2025 and December 31, 2024:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | | **September 30, 2025** | **September 30, 2025** | **September 30, 2025** |
|  | <br>**Useful Lives** <br>**Years** | **Gross Carrying**<br>**Amount** | **Accumulated**<br>**Amortization** | <br>**Net** |
| Amortizable intangible assets: |  |  |  |  |
| &nbsp;&nbsp;Customer relationships and contracts | 9-17 | $163040 | $62513 | $100527 |
| &nbsp;&nbsp;Trade name | 10 | 14780 | 10033 | 4747 |
| &nbsp;&nbsp;Developed technology | 7 | 4900 | 1575 | 3325 |
| &nbsp;&nbsp;Patents | 19 | 24 | 16 | 8 |
| &nbsp;&nbsp;Non-compete agreements | 2 | 2200 | 275 | 1925 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total definite-lived assets |  | $184944 | $74412 | $110532 |

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| | | | | |
|:---|:---|:---|:---|:---|
|  | | **December 31, 2024** | **December 31, 2024** | **December 31, 2024** |
|  | <br>**Useful Lives** <br>**Years** | **Gross Carrying**<br>**Amount** | **Accumulated**<br>**Amortization** | <br>**Net** |
| Amortizable intangible assets: |  |  |  |  |
| &nbsp;&nbsp;Customer relationships and contracts | 9-17 | $96040 | $57832 | $38208 |
| &nbsp;&nbsp;Trade name | 10 | 14780 | 8924 | 5856 |
| &nbsp;&nbsp;Non-compete agreements | 5 | 8800 | 8800 |  |
| &nbsp;&nbsp;Developed technology | 7 | 4900 | 1050 | 3850 |
| &nbsp;&nbsp;Patents | 19 | 24 | 15 | 9 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total definite-lived assets |  | $124544 | $76621 | $47923 |

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Additionally, the Company reported an indefinite lived non-amortizable brand name asset with a balance of $3,811 as of September 30, 2025 and December 31, 2024.

Changes in definite-lived intangible assets between December 31, 2024 and September 30, 2025 consist of:

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| | |
|:---|:---|
| Balance as of December 31, 2024 | $47923 |
| Amortization expense | (6591) |
| Acquisition (see Note 2) | 69200 |
| Balance as of September 30, 2025 | $110532 |

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Amortization expense was $3,125 and $1,733 for the three months ended September 30, 2025 and 2024, respectively, and $6,591 and $5,200 for the nine months ended September 30, 2025 and 2024.

Future amortization expense is expected to be as followed:

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| | |
|:---|:---|
| **Year ending December 31,**  |  |
| 2025 (remainder) | $3125 |
| 2026 | $12500 |
| 2027 | $11950 |
| 2028 | $11343 |
| 2029 | $9922 |
| Thereafter | $61692 |

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#### Note 4. Debt

#### Bank Revolving Credit Notes
On June 28, 2023, and as last amended on June 26, 2025, we entered into an amended and restated credit agreement (the Credit Agreement) with certain lenders and Wells Fargo Bank, National Association, as administrative agent (the Agent). The Credit Agreement provides for a $350,000 revolving credit facility, with a letter of credit sub-facility, and a swingline facility in an aggregate amount of $25,000. All amounts borrowed under the credit agreement mature on June 28, 2028.

The Credit Agreement contains usual and customary negative covenants for agreements of this type, including, but not limited to, restrictions on our ability to, subject to certain exceptions, create, incur or assume indebtedness; create, incur, assume or suffer to exist liens; make certain investments; allow our subsidiaries to merge or consolidate with another entity; make certain asset dispositions; pay certain dividends or other distributions to shareholders; enter into transactions with affiliates; enter into sale leaseback transactions; and exceed the limits on annual capital expenditures. The Credit Agreement also requires us to satisfy certain financial covenants, including a minimum consolidated interest coverage ratio of 3.00 to 1.00 as well as a consolidated total leverage ratio not to exceed 4.00 to 1.00 (which was modified as of July 1, 2025, from 3.50 to 1.00 in connection with the acquisition of Accu-Fab).

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The Company entered into an amendment (First Amendment) to the Credit Agreement on June 26, 2025. The First Amendment increased the amount of total allowable borrowings under the revolving credit facility to $350,000 from $250,000, by exercising the previously available $100,000 accordion feature. All other material terms of the credit agreement, including applicable interest rates, remained unchanged.

The Company incurred financing costs of $793 associated with executing the First Amendment, with the short-term and long-term balance of $264 and $462, respectively, recorded in prepaid expenses and other current assets and other long-term assets in the Condensed Consolidated Balance Sheets. These deferred financing costs will be amortized over the remaining duration of the agreement.

At September 30, 2025, our consolidated total leverage ratio was 3.47 to 1.00 as compared to a covenant maximum of 4.00 to 1.00 under the Credit Agreement.

At September 30, 2025, our consolidated interest coverage ratio was 6.23 to 1.00 as compared to a covenant minimum of 3.00 to 1.00 under the Credit Agreement.

Under the Credit Agreement, interest is payable quarterly at the adjusted secured overnight financing rate (SOFR) plus an applicable margin based on the current consolidated total leverage ratio (which may be adjusted for certain reserve requirements), plus 1.25% to 2.75% depending on the current consolidated total leverage ratio. Under certain circumstances, we may not be able to pay interest based on SOFR. If that happens, we will be required to pay interest at the Base Rate, which is the sum of the higher of (i) the Prime Rate (as publicly announced by the Agent from time to time), (ii) the Federal Funds Rate plus 0.50%, and (iii) Adjusted Term SOFR for a one-month tenor in effect on such day plus 1.00%. The interest rate was 5.39% and 6.55% as of September 30, 2025 and December 31, 2024, respectively. Additionally, the agreement has a fee on the average daily unused portion of the aggregate unused revolving commitments. This fee was 0.30% and 0.25% as of September 30, 2025 and December 31, 2024, respectively.

The Company was in compliance with all financial covenants of its credit agreements as of September 30, 2025 and December 31, 2024. The amount borrowed on the revolving credit notes was $211,858 and $79,725 as of September 30, 2025 and December 31, 2024, respectively.

***Other Debt***

Additionally, the Company has a Fond du Lac County and Fond du Lac Economic Development Corporation term note (Fond du Lac Term Note). The Fond du Lac Term Note is secured by a security agreement, payable in annual installments of $500 plus interest at 2.00% and is due in full in December 2028. The balance outstanding as of September 30, 2025 and December 31, 2024 was $1,875. The short-term and long-term balance of $500 and $1,375, respectively, are recorded in other current liabilities and other long-term liabilities in the Condensed Consolidated Balance Sheets, respectively.

#### Note 5. Leases
The Company has real property operating leases for office and manufacturing space. Operating leases for the Company's personal property consist of leases for office equipment, vehicles, forklifts and storage tanks for bulk gases. The Company recognizes a right-of-use (ROU) asset and a lease liability for operating leases based on the net present value of future minimum lease payments. Lease expense for the Company's operating leases is recognized on a straight-line basis over the lease term, including renewal periods that are considered reasonably certain. The Company has not elected to recognize right-of-use assets or lease liabilities for leases with a term of twelve months or less.

The Company has finance leases for equipment used throughout its office and manufacturing facilities. The Company recognizes an ROU asset and a lease liability for finance leases based on the net present value of future minimum lease payments.

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Lease expense for the Company's finance leases is comprised of the amortization of the ROU asset and interest expense recognized based on the effective interest method.

Variable lease expense is related to certain of the Company's real property leases and personal property leases, and it generally consists of property tax and insurance components that are for the benefit of the lessor (real property leases) and variable overage fees (personal property leases) that are remitted as part of the Company's lease payments.

The components of lease expense were as follows:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **Three Months Ended**  | **Three Months Ended**  | **Nine Months Ended**  | **Nine Months Ended**  |
|  | **September 30,**  | **September 30,**  | **September 30,**  | **September 30,**  |
|  | **2025** | **2024** | **2025** | **2024** |
| Finance lease cost: |  |  |  |  |
| &nbsp;&nbsp;Amortization of finance lease assets | $181 | $130 | $495 | $353 |
| &nbsp;&nbsp;Interest on finance lease liabilities | 32 | 12 | 59 | 32 |
| Total finance lease expense | 213 | 142 | 554 | 385 |
| Operating lease expense | 1672 | 1332 | 4319 | 4025 |
| Short-term lease expense | 368 | 200 | 845 | 511 |
| Variable lease expense | 43 | 66 | 207 | 178 |
| Lease income <sup>(1)</sup> | (545) | (547) | (1639) | (1616) |
| &nbsp;&nbsp;Total lease expense | $1751 | $1193 | $4286 | $3483 |

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&nbsp;&nbsp;&nbsp;&nbsp;(1) The Company subleased a portion of its Hazel Park, MI facility starting in June 2022.

The lease related supplemental cash flow information is as follows:

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| | | |
|:---|:---|:---|
|  | **Nine Months Ended**  | **Nine Months Ended**  |
|  | **September 30,**  | **September 30,**  |
|  | **2025** | **2024** |
| **Cash paid for amounts included in the measurement of lease liabilities for finance leases:** |  |  |
| Operating cash flows | $46 | $32 |
| Financing cash flows | $856 | $475 |
| **Cash paid for amounts included in the measurement of lease liabilities for operating leases:** |  |  |
| Operating cash flows | $5027 | $4459 |
| **Right-of-use assets obtained in exchange for recorded lease obligations:** |  |  |
| Operating leases | $3787 | $337 |
| Finance leases | $2322 | $377 |

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#### Note 6. Employee stock ownership plan
Under the Mayville Engineering Company, Inc. Employee Stock Ownership Plan (ESOP), the Company can make annual discretionary contributions to the trust for the benefit of eligible employees in the form of cash or shares of common stock of the Company subject to the Board of Directors' approval. The Company recorded no ESOP expense for the three and nine months ended September 30, 2025 and 2024.

As of January 1, 2025, the Company amended the plan reducing the distribution period from three years to full distribution on the annual distribution date of the year following separation from the Company.

Additionally, as of January 1, 2025, the in-service diversification percentage allowed increased from 25% at age 50 with 10 years of service to 50% and at age 55 with 10 years of service, the percentage allowed increased from 50% to 75%.

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At various times following death, disability, retirement, termination of employment or the exercise of diversification rights, an ESOP participant is entitled to receive their ESOP account balance in accordance with various distribution methods as permitted under the policies adopted by the ESOP.

As of September 30, 2025 and December 31, 2024, the ESOP shares consisted of 1,903,861 and 3,474,467 in allocated shares, respectively.

#### Note 7. Retirement plans
The Mayville Engineering Company, Inc. 401(k) Plan (the 401(k) Plan) covers substantially all employees meeting certain eligibility requirements. The 401(k) Plan is a defined contribution plan and is intended for eligible employees to defer tax-free contributions to save for retirement. Employees may contribute up to 50% of their eligible compensation to the 401(k) Plan, subject to the limits of Section 401(k) of the Internal Revenue Code.

The Company provides a 50% match for employee contributions, up to 6%. For the three months ended September 30, 2025 and 2024, the Company's employer match expense was $884 and $609, respectively. Total employer match expense for the nine months ended September 30, 2025 and 2024 was $2,631 and $2,585, respectively.

#### Note 8. Income taxes
On a quarterly basis, the Company estimates its effective tax rate for the full fiscal year and records a quarterly income tax provision based on the anticipated rate and adjusted for discrete taxable events that may occur in the quarter. As the year progresses, the Company will refine its estimate based on facts and circumstances by each tax jurisdiction.

Income tax benefit was $707 and $941, and the effective tax rate (ETR) was 20.90% and 20.05% for the three and nine months ended September 30, 2025, respectively. Our ETR is different from the expected tax rate due to state taxes, non-deductible items, research and development credits and excess tax expense associated with stock-based compensation items. The year-to-date rate includes the recognition of unfavorable discrete items.

For the three and nine months ended September 30, 2024, income tax expense was estimated at $100 and $2,532 and the ETR was 3.24% and 20.21%, respectively.

On July 4, 2025, U.S. enacted H.R. 1 "A bill to provide for reconciliation pursuant to Title II of H. Con. Res 14," commonly referred to as the One Big Beautiful Bill Act. We have evaluated the provisions of H.R. 1 and concluded that they do not have a material impact on the Condensed Consolidated Financial Statements.

***Uncertain Tax Positions***

Based on the Company's evaluation, there is one unrecognized tax benefit requiring recognition in its financial statements as of September 30, 2025. Any interest and penalties related to uncertain tax positions are recorded in income tax expense (benefit) on the Condensed Consolidated Statements of Comprehensive Income (Loss). The entire balance of unrecognized tax benefits as of September 30, 2025, if recognized, would affect the Company's effective tax rate.

The Company files income tax returns in the United States federal jurisdiction and in various state and local jurisdictions. Federal tax returns for tax years beginning January 1, 2021, and state tax returns for the years beginning January 1, 2020, are open for examination.

#### Note 9. Commitments and contingencies
***Litigation***

From time to time, the Company may be involved in various claims and lawsuits, both for and against the Company, arising in the normal course of business. Although the results of litigation and claims cannot be predicted with certainty, in management's

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opinion, either the likelihood of loss is remote, or any reasonably possible loss associated with the resolution of such proceedings is not expected to have a material adverse impact on the condensed consolidated financial statements.

#### Note 10. Deferred compensation
The Mayville Engineering Company Deferred Compensation Plan is available for certain employees designated to be eligible to participate by the Company and approved by the Board of Directors. Eligible employees may elect to defer a portion of their compensation for any plan year and the deferral cannot exceed 50% of the participant's base salary and may include the participant's annual short-term cash incentive up to 100%. The participants' election must be made prior to the first day of the plan year.

An employer contribution will be made for each participant to reflect the amount of any reduced allocations to the ESOP and/or 401(k) employer contributions due solely to the participant's deferral amounts, as applicable. In addition, a discretionary amount may be awarded to a participant by the Company.

Deferrals are assumed to be invested in an investment vehicle based on the options made available to the participant (which does not include Company stock).

The deferred compensation plan provides benefits payable upon separation of service or death. Payments are to be made 180 days after date of separation from service, either in a lump-sum payment or up to five annual installments as elected by the participant when the participant first elects to defer compensation.

The deferred compensation plan is non-funded, and all future contributions are unsecured in that the employees have the status of a general unsecured creditor of the Company and the agreements constitute a promise by the Company to make benefit payments in the future. During the three and nine months ended September 30, 2025, eligible employees elected to defer compensation of $87 and $762, respectively. Eligible employees elected to defer compensation of $96 and $544 for the three and nine months ended September 30, 2024, respectively. As of September 30, 2025 and December 31, 2024, the short-term portion accrued for all benefit years less than twelve months under this plan was $1,397 and $251, respectively, which is included within bonuses and deferred compensation on the Condensed Consolidated Balance Sheets. As of September 30, 2025 and December 31, 2024, the long-term portion accrued for all benefit years greater than twelve months under this plan was $4,672 and $4,719. These amounts include the initial deferral of compensation and were adjusted for changes in the value of investment options chosen by the participants. Total expense for the deferred compensation plan for the three months ended September 30, 2025 and 2024 was $281 and $204, respectively. Total expense for the deferred compensation plan for the nine months ended September 30, 2025 and 2024 was $591 and $489, respectively. These expenses are included in bonuses and deferred compensation on the Condensed Consolidated Statements of Comprehensive Income (Loss). Additionally, the Company made cash distributions of $253 and $286 for the nine months ended September 30, 2025 and 2024, respectively.

#### Note 11. Self-Funded insurance
The Company is self-funded for the medical benefits provided to its employees and their dependents. Healthcare costs are expensed as incurred and are based upon actual claims paid, reinsurance premiums, administration fees, and estimated unpaid claims. The Company has an aggregate stop loss limit to mitigate risk. Expenses related to this contract were $5,314 and $6,104 for the three months ended September 30, 2025 and 2024, respectively and $13,086 and $18,655 for the nine months ended September 30, 2025 and 2024. An estimated accrued liability of $836 and $1,184 was recorded as of September 30, 2025 and December 31, 2024, respectively, for estimated unpaid claims and is included within other current liabilities on the Condensed Consolidated Balance Sheets.

#### Note 12. Segments
**The Company operates as a single reporting unit and single reporting segment, and is managed on a consolidated basis. The Company derives revenue from its customers by providing value-added manufacturing solutions ranging from concept to production, including prototyping and tooling, production fabrication, coating, assembly and aftermarket components. The accounting policies of the Company's one operating segment are the same as those described in the summary of significant accounting policies. The Company's chief operating decision maker (CODM) is regularly provided with and assesses performance for its one operating** 

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#### segment with only the consolidated expenses and net income (loss) as presented in the Condensed Consolidated Statements of Comprehensive Income (Loss).
**The CODM uses these performance measures to evaluate the Company's profitability, deciding whether to reinvest profits into the segment or into other parts of the entity, such as acquisitions or to buy back Company common stock and monitor budget versus actual results.**

All sales are generated and all assets are located within the United States and the business activities are managed at a consolidated level.

The Company's President and Chief Executive Officer is the CODM.

#### Note 13. Fair value of financial instruments
Fair value provides information on what the Company may realize if certain assets were sold or might pay to transfer certain liabilities based upon an exit price. Financial assets and liabilities that are measured and reported at fair value are classified into a three-level hierarchy that prioritizes the inputs used in the valuation process. A financial instrument's categorization within the valuation hierarchy is based on the lowest level of any input that is significant to the fair value measurement. The hierarchy is based on the observability and objectivity of the pricing inputs as follows:

● Level 1 – Quoted prices in active markets for identical assets or liabilities.

● Level 2 – Significant directly observable data (other than Level 1 quoted prices) or significant indirectly observable data through corroboration with observable market data. Inputs would normally be (i) quoted prices in active markets for similar assets or liabilities, (ii) quoted prices in inactive markets for identical or similar assets or liabilities or (iii) information derived from or corroborated by observable market data. Long-term debt is classified as a Level 2 fair value input.

● Level 3 – Prices or valuation techniques that require significant unobservable data inputs. These inputs would normally be the Company's own data and judgements about assumptions that market participants would use in pricing the asset or liability.

The following table lists the Company's financial assets and liabilities accounted for at fair value by the fair value hierarchy:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | | **Fair Value Measurements at** | **Fair Value Measurements at** | **Fair Value Measurements at** |
|  | | **Report Date Using** | **Report Date Using** | **Report Date Using** |
|  | **Balance at**<br>**September 30,** <br>**2025** | **(Level 1)** | **(Level 2)** | **(Level 3)** |
| Deferred compensation liability | $6069 | $6069 | $— | $— |
| &nbsp;&nbsp;Total | $6069 | $6069 | $— | $— |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | | **Fair Value Measurements at** | **Fair Value Measurements at** | **Fair Value Measurements at** |
|  | | **Report Date Using** | **Report Date Using** | **Report Date Using** |
|  | **Balance at**<br>**December 31,** <br>**2024** | **(Level 1)** | **(Level 2)** | **(Level 3)** |
| Deferred compensation liability | $4969 | $4969 | $— | $— |
| &nbsp;&nbsp;Total | $4969 | $4969 | $— | $— |

---

Fair value measurements for the Company's cash and cash equivalents are classified based upon Level 1 measurements because such measurements are based upon quoted market prices in active markets for identical assets.

Accounts receivable, accounts payable, long-term debt and accrued liabilities are recorded in the Condensed Consolidated Balance Sheets at cost and approximate fair value.

Deferred compensation liabilities are recorded at amounts due to participants at the time of deferral. Deferrals are invested in an investment vehicle based on the options made available to the participant, considered to be Level 1 or Level 2 on the fair value hierarchy, with the current balance all as Level 1. The change in fair value is recorded in the bonuses and deferred compensation line

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item on the Condensed Consolidated Statements of Comprehensive Income (Loss). The short-term and long-term balances due to participants are reflected on the bonuses and deferred compensation and deferred compensation, less current portion line items, respectively, on the Condensed Consolidated Balance Sheets.

The Company's non-financial assets such as goodwill, intangible assets and property, plant, and equipment are re-measured at fair value when there is an indication of impairment and adjusted only when an impairment charge is recognized. As of September 30, 2025, there was no impairment recognized for the year.

#### Note 14. Earnings Per Share
The Company computes earnings per share in accordance with ASC Topic 260, *Earnings per Share*. In accordance with ASC 260, outstanding options will be considered to have been exercised and outstanding as of the beginning of the period if the average market price of the common stock during the period exceeds the exercise price of the options (they are "in the money"), and the assumed exercise of the options do not have an anti-dilutive impact on earnings per share.

A reconciliation of basic and diluted net income (loss) per share attributable to the Company were as follows:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Three Months Ended**  | **Three Months Ended**  | **Nine Months Ended**  | **Nine Months Ended**  |
|  | **September 30,**  | **September 30,**  | **September 30,**  | **September 30,**  |
|  | **2025** | **2024** | **2025** | **2024** |
| Net income (loss) attributable to MEC | $(2675) | $2974 | $(3752) | $9997 |
| Weighted average shares outstanding | 20423858 | 20715275 | 20485995 | 20601702 |
| Basic income (loss) per share | $(0.13) | $0.14 | $(0.18) | $0.49 |
| Weighted average shares outstanding | 20423858 | 20715275 | 20485995 | 20601702 |
| Effect of dilutive stock-based compensation | 259202 | 408219 | 249105 | 291614 |
| &nbsp;&nbsp;Total potential shares outstanding | 20683060 | 21123494 | 20735100 | 20893316 |
| Diluted income (loss) per share | $(0.13) | $0.14 | $(0.18) | $0.48 |

---

There were no options in the money that were excluded in the computation of diluted earnings per share for the three and nine months ended September 30, 2025 and 2024 that had an anti-dilutive impact on earnings per share.

#### Note 15. Revenue Recognition
***Contract Assets and Contract Liabilities***

The Company has contract assets and contract liabilities, which are included in tooling in progress and other current liabilities on the Condensed Consolidated Balance Sheets, respectively. Contract assets primarily consist of capitalized costs related to customer-owned tooling contracts, wherein the Company has not yet met performance obligations. Contract liabilities include deferred tooling revenue, where the performance obligation was not met. The performance obligation is satisfied when the tooling is completed and the customer signs off through the Product Part Approval Process or other documented customer acceptance. Cost of goods sold is recognized and released from the balance sheet when control of the tooling promised under contract is transferred to the customer.

The Company's contracts with customers are short-term in nature; therefore, revenue is typically recognized, billed and collected within a 12-month period. The following table reflects the changes in our contract assets and liabilities during the nine months ended September 30, 2025:

---

| | | |
|:---|:---|:---|
|  | **Contract**<br>**Assets** | **Contract**<br>**Liabilities** |
| As of December 31, 2024 | $4761 | $3462 |
| Net activity | (115) | (535) |
| As of September 30, 2025 | $4646 | $2927 |

---

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During the nine months ended September 30, 2025, revenue recognized from deferred revenue that was recorded as a contract liability at the beginning of 2025 was $2,755. During the nine months ended September 30, 2024, revenue recognized from deferred revenue that was recorded as a contract liability at the beginning of 2024 was $2,620.

***Disaggregated Revenue***

The following tables represent a disaggregation of revenue by product category and end market:

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended**  | **Three Months Ended**  | **Nine Months Ended**  | **Nine Months Ended**  |
| | **September 30,**  | **September 30,**  | **September 30,**  | **September 30,**  |
| <br>**Product Category** | **2025** | **2024** | **2025** | **2024** |
| Outdoor sports | $1808 | $1824 | $5700 | $6188 |
| Fabrication | 77875 | 67284 | 209689 | 245400 |
| Performance structures | 44213 | 42645 | 127408 | 136209 |
| Tube | 17930 | 16140 | 55000 | 55061 |
| Tank | 6817 | 10684 | 26002 | 34385 |
| &nbsp;&nbsp;Total | 148643 | 138577 | 423799 | 477243 |
| Intercompany sales elimination | (4333) | (3185) | (11582) | (16945) |
| &nbsp;&nbsp;Total, net sales | $144310 | $135392 | $412217 | $460298 |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **September 30,**  | **September 30,**  | **September 30,**  | **September 30,**  |
| <br>**End Market** | **2025** | **2024** | **2025** | **2024** |
| Commercial vehicle | $39211 | $51612 | $139221 | $172696 |
| Construction & access | 22145 | 20110 | 61843 | 75786 |
| Powersports | 22980 | 21605 | 64855 | 82202 |
| Data center & critical power | 22566 | 4658 | 31748 | 13139 |
| Agriculture | 8098 | 10358 | 28266 | 39955 |
| Military | 7433 | 6968 | 24262 | 21499 |
| Other | 21877 | 20081 | 62022 | 55021 |
| &nbsp;&nbsp;Total, net sales | $144310 | $135392 | $412217 | $460298 |

---

In connection with the acquisition of Accu-Fab, the Company added a new end market category, data center & critical power to its revenue disaggregation. As a result, revenue previously reported within other has been reclassified to data center & critical power for all periods presented. Specifically, $4,658 and $13,139 of revenue for the three and nine months ended September 30, 2024, respectively, were reclassified from other to data center & critical power to conform to the current period presentation.

**Note 16. Concentration of major customers**

The following customers accounted for 10% or greater of the Company's recorded net sales or net trade receivables:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Net Sales** | **Net Sales** | **Net Sales** | **Net Sales** | **Accounts Receivable** | **Accounts Receivable** |
|  | **Three Months Ended**  | **Three Months Ended**  | **Nine Months Ended**  | **Nine Months Ended**  | | |
|  | **September 30,**  | **September 30,**  | **September 30,**  | **September 30,**  | | |
|  | **2025** | **2024** | **2025** | **2024** | **As of**<br>**September 30,** <br>**2025** | **As of**<br>**December 31,** <br>**2024** |
| Customer |  |  |  |  |  |  |
| &nbsp;&nbsp;A | 10.7% | 16.8% | 14.2% | 16.5% | <10% | 11.1% |
| &nbsp;&nbsp;B | <10% | <10% | 10.2% | 12.2% | <10% | <10% |
| &nbsp;&nbsp;C | <10% | <10% | <10% | 10.2% | <10% | <10% |
| &nbsp;&nbsp;D | <10% | <10% | <10% | <10% | <10% | 15.2% |

---

#### Note 17. Stock-based compensation
The Mayville Engineering Company, Inc. 2019 Omnibus Incentive Plan provided the Company the ability to grant monetary payments based on the value of its common stock, up to 2,000,000 shares.

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On April 20, 2021, shareholders of the Company approved an amendment to the 2019 Omnibus Incentive Plan increasing the number of shares of common stock authorized for issuance by 2,500,000 shares.

The total number of shares of the Company's common stock still available for issuance under the 2019 Omnibus Incentive Plan as of September 30, 2025 is 1,684,137.

The Company recognizes stock-based compensation using the fair value provisions prescribed by ASC 718, *Compensation – Stock Compensation*. Accordingly, compensation costs for awards of stock-based compensation settled in shares are determined based on the fair value of the stock-based instrument at the time of grant and are recognized as expense over the vesting period of the stock-based instrument. Our stock-based compensation consists of stock options, restricted stock units (RSUs) and performance stock units (PSUs). For all types of units, fair value is equivalent to the adjusted closing stock price at the date of the grant. The Black-Scholes option pricing model is utilized to determine fair value for stock options.

Cancellations and forfeitures are accounted for as incurred.

Stock-based compensation expense was $845 and $1,352 for the three months ended September 30, 2025 and 2024, respectively, and $2,953 and $3,847 for the nine months ended September 30, 2025 and 2024, respectively. The Company reports stock-based compensation within bonuses and deferred compensation in the Condensed Consolidated Statements of Comprehensive Income (Loss).

There were no stock options granted by the Company to employees during the three and nine months ended September 30, 2025 and 2024. Stock option grants expire 10 years subsequent to the grant date. Stock-based compensation expense related to stock options is calculated by estimating the fair value of non-qualified stock options at the time of grant and is amortized over the stock options' vesting period. During the nine months ended September 30, 2025, 113,700 options vested with a weighted average strike price of $15.99. There were no stock options exercised during the three months ended September 30, 2025. For the nine months ended September 30, 2025, 125,363 options were exercised with a weighted average strike price of $11.69. As of September 30, 2025, 335,713 options remained outstanding with a weighted average strike price of $14.50 and a weighted average contractual life of 9.95 years. During the three and nine months ended September 30, 2025, 86,542 options were forfeited with a weighted average strike price of $16.57.

The Company granted 12,404 and 4,611 RSUs, during the three months ended September 30, 2025 and 2024, respectively. The Company granted 335,541 and 427,171 RSUs, inclusive of 53,721 and 55,962 director awards during the nine months ended September 30, 2025 and 2024, respectively. The RSUs granted to employees vest ratably over a three-year period beginning the subsequent year to the anniversary of the grant date and director awards vest the subsequent year to the grant date.

No PSUs were granted by the Company to employees during the three months ended September 30, 2025 and 2024. The Company granted 169,062 and 110,710 PSUs during the nine months ended September 30, 2025 and 2024, respectively. PSUs are earned based on the achievement of pre-determined financial performance goals at the end of a three-year performance measurement period. The applicable performance period varies for each grant year.

The performance goals for the PSUs granted in 2025 are weighted 50% on the 3-year average of the Company's Return on Invested Capital ("ROIC") from 2025 to 2027 and 50% on the Company's 2027 adjusted EBITDA target. The performance goals for the PSUs granted in 2024 are weighted 50% on the 3-year average of the Company's ROIC from 2024 to 2026 and 50% on the Company's 2026 adjusted EBITDA target. ROIC represents net operating profit after taxes divided by invested capital for the represented period. Adjusted EBITDA represents net income before interest expense, provision (benefit) for income taxes, depreciation, amortization, stock-based compensation expense, legal costs due to the former fitness customer and adjusted for items to be determined unusual in nature or infrequent in occurrence for the performance period, as approved by the Compensation Committee. The number of earned PSUs can range from 50% (threshold) to 200% (maximum) of the target award, with no PSUs earned for performance below the threshold level.

#### Note 18. Common Equity
At September 30, 2025 the authorized stock of the Company consisted of 75,000,000 shares of common stock without par value.

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Changes in outstanding common shares are summarized as follows:

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| | |
|:---|:---|
|  | **Shares**<br>**Outstanding** |
| Shares as of December 31, 2023 | 20310584 |
| Treasury stock purchases | (114925) |
| Common stock issued (including stock-based compensation impact) | 448674 |
| Balance as of September 30, 2024 | 20644333 |
|  | **Shares** |
|  | **Outstanding** |
| Balance as of December 31, 2024 | 20416908 |
| Treasury stock purchases | (304136) |
| Common stock issued (including stock-based compensation impact) | 205598 |
| Balance as of September 30, 2025 | 20318370 |

---

**Note 19. Restructuring**

On August 5, 2025, the Company initiated a restructuring plan (the Plan) designed to reduce fixed costs and optimize its operational footprint. The Plan provides for the consolidation of three warehouses and one manufacturing facility into the Company's other facilities and is expected to be completed by December 31, 2026.

The Company expects to incur aggregate charges of between $5,000 and $7,000 in total restructuring costs, which includes approximately $5,000 for equipment relocation and footprint optimization and approximately $1,000 in asset write-downs and related charges. Total restructuring charges incurred during the three months ended September 30, 2025 were $559, recorded in cost of sales in the Condensed Consolidated Statements of Comprehensive Income (Loss). The Company expects to incur additional charges under the Plan in future periods as implementation progresses. Restructuring charges during the three and nine months ended September 30, 2025, were as follows:

---

| | | | |
|:---|:---|:---|:---|
|  | **Equipment Relocation**<br>**and Footprint**<br>**Optimization** | <br>**Asset** <br>**Write-downs** | <br><br>**Total** |
| Amount recognized in cost of sales | $443 | $116 | $559 |
| Cash expenses | $411 | $— | $411 |

---

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**Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations.**

Management's Discussion and Analysis of Financial Condition and Results of Operations is intended to assist in the understanding and assessing the trends and significant changes in our results of operations and financial condition. Historical results may not be indicative of future performance. This discussion includes forward-looking statements that reflect our plans, estimates and beliefs. Such statements involve risks and uncertainties. Our actual results may differ materially from those contemplated by these forward-looking statements as a result of various factors, including those set forth in "Risk Factors" in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2024 and "Cautionary Statement Regarding Forward-Looking Statements" in this Quarterly Report on Form 10-Q. This discussion should be read in conjunction with our audited Consolidated Financial Statements and the notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2024 and our unaudited Condensed Consolidated Financial Statements and the notes thereto included in Part I, Item I of this Quarterly Report on Form 10-Q. In this discussion, we use certain non-GAAP financial measures. Explanation of these non-GAAP financial measures and reconciliation to the most directly comparable GAAP financial measures are included in this Management Discussion and Analysis of Financial Condition and Results of Operations. Investors should not consider non-GAAP financial measures in isolation or as substitutes for financial information presented in compliance with GAAP.

All amounts are presented in thousands except share amounts, per share data, years and ratios.

#### Overview
MEC is a leading U.S.-based vertically-integrated, value-added manufacturing partner providing a full suite of manufacturing solutions from concept to production, including design, prototyping and tooling, fabrication, aluminum extrusion, coating, assembly and aftermarket components. Our customers operate in diverse end markets, including heavy- and medium-duty commercial vehicles, construction & access equipment, powersports, data center & critical power, agriculture, military and other end markets. We have developed long-standing relationships with our blue-chip customers based upon our commitment to "Unmatched Excellence".

Our one operating segment focuses on producing metal components that are used in a broad range of heavy- and medium-duty commercial vehicles, construction & access equipment, powersports, data center & critical power, agricultural, military and other products.

#### Macroeconomic Conditions
Over the past few years, the broader market dynamics, combined with recent geopolitical and economic developments, including foreign trade relations and associated, threatened and implemented tariffs, have resulted in impacts to the Company. These influences have contributed to elevated interest rates, inconsistent customer demand, material cost inflation and labor availability. The Company expects some of these dynamics to continue through 2025 and could continue to have an impact on demand, material costs and labor.

#### How We Assess Performance
***Net Sales.*** Net sales reflect sales of our components and products net of allowances for returns and discounts. In addition to the current macroeconomic conditions, several factors affect our net sales in any given period, including weather, timing of acquisitions and the production schedules of our customers. Net sales are recognized at the time of shipment or at delivery to the customer.

***Manufacturing Margins.*** Manufacturing margins represents net sales less cost of sales. Cost of sales consists of all direct and indirect costs used in the manufacturing process, including raw materials, labor, equipment costs, depreciation, lease expenses, subcontract costs and other directly related overhead costs. Our cost of sales is directly affected by the fluctuations in commodity prices, primarily sheet steel and aluminum, but these changes are largely mitigated by contractual agreements with our customers that allow us to pass through these price variations based upon certain market indexes.

***Depreciation and Amortization.*** We carry property, plant and equipment on our balance sheet at cost, net of accumulated depreciation. Depreciation on property, plant and equipment is computed on a straight-line basis over the estimated useful life of the asset. The periodic expense related to leasehold improvements and intangible assets is depreciation and amortization expense, respectively. Leasehold improvements are depreciated over the lesser of the life of the underlying asset or the remaining lease term. Our intangible assets were recognized as a result of certain acquisitions and are generally amortized on a straight-line basis over the estimated useful lives of the assets.

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***Other Selling, General, and Administrative Expenses (SG&A).*** Other selling, general and administrative expenses consist primarily of salaries and personnel costs for our sales and marketing, finance, human resources, information systems, administration and certain other managerial employees and certain corporate level administrative expenses such as audit, accounting, legal and other consulting and professional services, travel, and insurance.

#### Other Key Performance Indicators

#### EBITDA, EBITDA Margin, Adjusted EBITDA, Adjusted EBITDA Margin and Free Cash Flow
EBITDA represents net income (loss) before interest expense, provision (benefit) for income taxes, depreciation and amortization. EBITDA Margin represents EBITDA as a percentage of net sales for each period.

Adjusted EBITDA represents EBITDA before stock-based compensation expense, legal costs due to former fitness customer, Chief Financial Officer (CFO) transition costs, natural disaster costs, acquisition related costs, restructuring and costs recognized on step-up of Accu-Fab acquired inventory. Adjusted EBITDA Margin represents Adjusted EBITDA as a percentage of net sales for each period.

Free cash flow represents net cash provided by operating activities less cash flow used in the purchase of property, plant and equipment.

These metrics are supplemental measures of our operating performance that are neither required by, nor presented in accordance with, GAAP. These measures should not be considered as an alternative to net income (loss) or any other performance measure derived in accordance with GAAP as an indicator of our operating performance. We present EBITDA, EBITDA Margin, Adjusted EBITDA, Adjusted EBITDA Margin and Free Cash Flow as management uses these measures as key performance indicators, and we believe they are measures frequently used by securities analysts, investors and other parties to evaluate companies in our industry. These measures have limitations as analytical tools and should not be considered in isolation or as substitutes for analysis of our results as reported under GAAP.

Our calculation of EBITDA, EBITDA Margin, Adjusted EBITDA, Adjusted EBITDA Margin and Free Cash Flow may not be comparable to the similarly named measures reported by other companies. Potential differences between our measures of EBITDA and Adjusted EBITDA compared to other similar companies' measures of EBITDA and Adjusted EBITDA may include differences in capital structure and tax positions.

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The following table presents a reconciliation of net income (loss) and comprehensive income (loss), the most directly comparable measure calculated in accordance with GAAP, to EBITDA and Adjusted EBITDA, and the calculation of EBITDA Margin and Adjusted EBITDA Margin for each of the periods presented.

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **Three Months Ended**  | **Three Months Ended**  | **Nine Months Ended**  | **Nine Months Ended**  |
|  | **September 30,**  | **September 30,**  | **September 30,**  | **September 30,**  |
|  | **2025** | **2024** | **2025** | **2024** |
| Net income (loss) and comprehensive income (loss) | $(2675) | $2974 | $(3752) | $9997 |
| Interest expense | 3430 | 2653 | 6395 | 8977 |
| Provision (benefit) for income taxes | (707) | 100 | (941) | 2532 |
| Depreciation and amortization | 11136 | 9482 | 30222 | 28127 |
| &nbsp;&nbsp;EBITDA | 11184 | 15209 | 31924 | 49633 |
| Stock-based compensation expense <sup>(1)</sup> | 845 | 1352 | 2953 | 3847 |
| Legal costs due to former fitness customer <sup>(2)</sup> |  | 501 |  | 1740 |
| CFO transition costs <sup>(3)</sup> |  |  | 1148 |  |
| Natural disaster costs <sup>(4)</sup> | 15 |  | 307 |  |
| Acquisition related costs <sup>(5)</sup> | 887 |  | 3265 |  |
| Restructuring <sup>(6)</sup> | 559 |  | 559 |  |
| Costs recognized on step-up of Accu-Fab acquired inventory <sup>(7)</sup> | 591 |  | 591 |  |
| &nbsp;&nbsp;Adjusted EBITDA | $14081 | $17062 | $40747 | $55220 |
| Net sales | $144310 | $135392 | $412217 | $460298 |
| &nbsp;&nbsp;EBITDA Margin | 7.7% | 11.2% | 7.7% | 10.8% |
| &nbsp;&nbsp;Adjusted EBITDA Margin | 9.8% | 12.6% | 9.9% | 12.0% |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) Non-cash employee compensation based on the value of common stock issued pursuant to the 2019 Omnibus Incentive Plan.

&nbsp;&nbsp;&nbsp;&nbsp;(2) Legal costs associated with the enforcement of the Company's supply contract with the former fitness customer.

&nbsp;&nbsp;&nbsp;&nbsp;(3) Costs associated with the separation of the former CFO.

&nbsp;&nbsp;&nbsp;&nbsp;(4) Costs incurred for facility clean-up following tornado damage at one of the Company's locations.

&nbsp;&nbsp;&nbsp;&nbsp;(5) Transaction costs, primarily legal and professional services, related to the acquisition of Accu-Fab.

&nbsp;&nbsp;&nbsp;&nbsp;(6) Restructuring costs related to the consolidation of three warehouses and one manufacturing facility into the Company's existing facilities.

&nbsp;&nbsp;&nbsp;&nbsp;(7) Expense associated with the recognized fair value step-up of inventory in correlation with the Accu-Fab acquisition. See Note 2 – Acquisition for additional detail.

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The following table presents a reconciliation of net cash provided by operating activities, the most directly comparable measure calculated in accordance with GAAP, to free cash flow for each of the periods presented.

---

| | | |
|:---|:---|:---|
|  | **Nine Months Ended** | **Nine Months Ended** |
|  | **September 30,**  | **September 30,**  |
|  | **2025** | **2024** |
| Net cash provided by operating activities | $25181 | $51847 |
| Less: Capital expenditures | 8430 | 9753 |
| &nbsp;&nbsp;Free cash flow | $16751 | $42094 |

---

***Free Cash Flow Analysis Nine Months Ended September 30, 2025 Compared to Nine Months Ended September 30, 2024***

Free cash flow for the nine months ended September 30, 2025 was $16,751 as compared to $42,094 for the nine months ended September 30, 2024, a decrease of $25,343 or 60.2%. The decrease in free cash flow was due to a decrease in cash provided by operating activities, offset by lower capital expenditures. Please see the "Liquidity and Capital Resources" section below for further information.

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#### Consolidated Results of Operations
***Three Months Ended September 30, 2025 Compared to Three Months Ended September 30, 2024***

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Three Months Ended September 30,**  | **Three Months Ended September 30,**  | **Three Months Ended September 30,**  | **Three Months Ended September 30,**  | **Three Months Ended September 30,**  | **Three Months Ended September 30,**  |
|  | **2025** | **2025** | **2024** | **2024** | **Increase (Decrease)** | **Increase (Decrease)** |
|  | <br>**Amount** | **% of Net** <br>**Sales** | <br>**Amount** | **% of Net** <br>**Sales** | **Amount** <br>**Change** | <br>**% Change** |
| Net sales | $144310 | 100.0% | $135392 | 100.0% | $8918 | 6.6% |
| Cost of sales | 128371 | 89.0% | 118297 | 87.4% | 10074 | 8.5% |
| &nbsp;&nbsp;Manufacturing margins | 15939 | 11.0% | 17095 | 12.6% | (1156) | (6.8)% |
| Amortization of intangible assets | 3125 | 2.2% | 1733 | 1.3% | 1392 | 80.3% |
| Bonuses and deferred compensation | 2221 | 1.5% | 2076 | 1.5% | 145 | 7.0% |
| Other selling, general and administrative expenses | 10545 | 7.3% | 7559 | 5.6% | 2986 | 39.5% |
| &nbsp;&nbsp;Income from operations | 48 | 0.0% | 5727 | 4.2% | (5679) | (99.2)% |
| Interest expense | (3430) | 2.4% | (2653) | 2.0% | 777 | 29.3% |
| Provision (benefit) for income taxes | (707) | (0.5)% | 100 | 0.1% | (807) | (807.0)% |
| &nbsp;&nbsp;Net income (loss) and comprehensive income (loss) | $(2675) | (1.9)% | $2974 | 2.2% | $(5649) | (189.9)% |
| EBITDA | $11184 | 7.7% | $15209 | 11.2% | $(4025) | (26.5)% |
| Adjusted EBITDA | $14081 | 9.8% | $17062 | 12.6% | $(2981) | (17.5)% |

---

***Net Sales.* Net sales were $144,310 for the three months ended September 30, 2025 as compared to $135,392 for the three months ended September 30, 2024, an increase of $8,918, or 6.6%. This increase was driven by the recent acquisition of Accu-Fab, which more than offset lower customer demand within the Commercial Vehicle, Agriculture and Other end markets.**

***Manufacturing Margins.*** Manufacturing margins were $15,939 for the three months ended September 30, 2025 as compared to $17,095 for the three months ended September 30, 2024, a decrease of $1,156, or 6.8%. The decrease was primarily driven by non-recurring restructuring costs, inventory step-up expense associated with the Accu-Fab acquisition and lower legacy customer sales, partially offset by higher-margin net sales contribution from the Accu-Fab acquisition.

Manufacturing margin percentages were 11.0% for the three months ended September 30, 2025, as compared to 12.6% for the three months ended September 30, 2024, a decrease of 160 basis points. The decrease was attributable to the items discussed in the preceding paragraph.

***Amortization of Intangibles Assets.*** Amortization of intangible assets were $3,125 for the three months ended September 30, 2025, as compared to $1,733 for the three months ended September 30, 2024, an increase of $1,392 or 80.3%. The increase was due to amortization expense associated with identifiable intangible assets from the Accu-Fab acquisition. Refer to Note 2 – Acquisition for additional information related to these identifiable intangible assets.

***Bonuses and Deferred Compensation Expenses.*** Bonuses and deferred compensation expenses were $2,221 for the three months ended September 30, 2025, as compared to $2,076 for the three months ended September 30, 2024, an increase of $145, or 7.0%. The increase was primarily driven by higher 401(k) match expense and the addition of plan participants as a result of the Accu-Fab acquisition, partially offset by lower stock-based compensation expense.

***Other Selling, General and Administrative Expenses.*** Other SG&A expenses were $10,545 for the three months ended September 30, 2025 as compared to $7,559 for the three months ended September 30, 2024, an increase of $2,986, or 39.5%. The increase was primarily attributable to non-recurring costs and incremental SG&A expense, each associated with the Accu-Fab acquisition.

***Interest Expense.*** Interest expense was $3,430 for the three months ended September 30, 2025 as compared to $2,653 for the three months ended September 30, 2024, an increase of $777, or 29.3%. The increase was due to an increase in borrowings associated with the Accu-Fab acquisition, partially offset by lower interest rates relative to the prior year period.

***Provision (Benefit) for Income Taxes.*** Income tax benefit was $707 for the three months ended September 30, 2025 as compared to income tax expense of $100 for the three months ended September 30, 2024. The decrease of $807 is primarily due to a

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pre-tax loss in the current year period compared to pre-tax income in the prior year period. The effective tax rate for the current period also reflects discrete tax benefits recognized during the three months ended September 30, 2025. Refer to Note 8 – Income Taxes of the Condensed Consolidated Financial Statements for further details.

Due to the factors described in the preceding paragraphs, net income (loss) and comprehensive income (loss), EBITDA, EBITDA Margin, Adjusted EBITDA and Adjusted EBITDA Margin decreased during the three months ended September 30, 2025 as compared to the three months ended September 30, 2024.

#### Nine Months Ended September 30, 2025 Compared to Nine Months Ended September 30, 2024

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Nine Months Ended September 30,**  | **Nine Months Ended September 30,**  | **Nine Months Ended September 30,**  | **Nine Months Ended September 30,**  | **Nine Months Ended September 30,**  | **Nine Months Ended September 30,**  |
|  | **2025** | **2025** | **2024** | **2024** | **Increase (Decrease)** | **Increase (Decrease)** |
|  | <br>**Amount** | **% of Net** <br>**Sales** | <br>**Amount** | **% of Net** <br>**Sales** | **Amount** <br>**Change** | <br>**% Change** |
| Net sales | $412217 | 100.0% | $460298 | 100.0% | $(48081) | (10.4)% |
| Cost of sales | 367126 | 89.1% | 399993 | 86.9% | (32867) | (8.2)% |
| &nbsp;&nbsp;Manufacturing margins | 45091 | 10.9% | 60305 | 13.1% | (15214) | (25.2)% |
| Amortization of intangible assets | 6591 | 1.6% | 5200 | 1.1% | 1391 | 26.8% |
| Bonuses and deferred compensation | 7071 | 1.7% | 10010 | 2.2% | (2939) | (29.4)% |
| Other selling, general and administrative expenses | 29727 | 7.2% | 23589 | 5.1% | 6138 | 26.0% |
| &nbsp;&nbsp;Income from operations | 1702 | 0.4% | 21506 | 4.7% | (19804) | (92.1)% |
| Interest expense | (6395) | 1.6% | (8977) | 2.0% | (2582) | (28.8)% |
| Provision (benefit) for income taxes | (941) | (0.2)% | 2532 | 0.6% | (3473) | (137.2)% |
| &nbsp;&nbsp;Net income (loss) and comprehensive income (loss) | $(3752) | (0.9)% | $9997 | 2.2% | $(13749) | (137.5)% |
| EBITDA | $31924 | 7.7% | $49633 | 10.8% | $(17709) | (35.7)% |
| Adjusted EBITDA | $40747 | 9.9% | $55220 | 12.0% | $(14473) | (26.2)% |

---

***Net Sales.* Net sales were $412,217 for the nine months ended September 30, 2025 as compared to $460,298 for the nine months ended September 30, 2024, a decrease of $48,081 or 10.4%. This decrease was driven by reduced customer demand across nearly all end markets and customer de-stocking channel inventory. This decline was partially offset by increased after-market demand in our Military end market and the acquisition of Accu-Fab.**

***Manufacturing Margins.*** Manufacturing margins were $45,091 for the nine months ended September 30, 2025 as compared to $60,305 for the nine months ended September 30, 2024, a decrease of $15,214, or 25.2%. The decrease was primarily driven by the softening customer demand, non-recurring restructuring costs and inventory step-up expense associated with the Accu-Fab acquisition, partially offset by cost reduction actions and higher-margin net sales contribution from the Accu-Fab acquisition.

Manufacturing margin percentages were 10.9% for the nine months ended September 30, 2025, as compared to 13.1% for the nine months ended September 30, 2024, a decrease of 220 basis points. The decrease was attributable to reduced absorption of fixed costs as a result of lower legacy MEC sales and the items discussed in the preceding paragraph.

***Amortization of Intangibles Assets.*** Amortization of intangible assets were $6,591 for the nine months ended September 30, 2025, as compared to $5,200 for the nine months ended September 30, 2024, an increase of $1,391 or 26.8%. The increase was due to amortization expense associated with identifiable intangible assets from the Accu-Fab acquisition. Refer to Note 2 – Acquisition for additional information related to these identifiable intangible assets.

***Bonuses and Deferred Compensation Expenses.*** Bonuses and deferred compensation expenses were $7,071 for the nine months ended September 30, 2025 as compared to $10,010 for the nine months ended September 30, 2024, a decrease of $2,939, or 29.4%. The decrease was primarily driven by lower bonus accruals and stock-based compensation expense aligning with the Company financial performance.

***Other Selling, General and Administrative Expenses.*** Other selling, general and administrative expenses were $29,727 for the nine months ended September 30, 2025 as compared to $23,589 for the nine months ended September 30, 2024, an increase of $6,138,

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or 26.0%. The increase was attributable to non-recurring costs related to the Accu-Fab acquisition and CFO transition, incremental SG&A expenses associated with Accu-Fab and higher costs related to compliance requirements.

***Interest Expense.*** Interest expense was $6,395 for the nine months ended September 30, 2025 as compared to $8,977 for the nine months ended September 30, 2024, a decrease of $2,582, or 28.8%. The decrease was due to reduced interest rates relative to the prior year period, partially offset by an increase in borrowings associated with the recent Accu-Fab acquisition.

***Provision (Benefit) for Income Taxes.*** Income tax benefit was $941 for the nine months ended September 30, 2025 as compared to income tax expense of $2,532 for the nine months ended September 30, 2024. The decrease of $3,473 is primarily due to a pre-tax loss in the current year period compared to pre-tax income in the prior year period. The effective tax rate for the current period also reflects discrete tax benefits recognized during the nine months ended September 30, 2025. Refer to Note 8 – Income Taxes of the Condensed Consolidated Financial Statements for further details.

Due to the factors described in the preceding paragraphs, net income (loss) and comprehensive income (loss), EBITDA, EBITDA Margin, Adjusted EBITDA and Adjusted EBITDA Margin decreased during the nine months ended September 30, 2025 as compared to the nine months ended September 30, 2024.

#### Liquidity and Capital Resources

#### Cash Flows Analysis

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Nine Months Ended**  | **Nine Months Ended**  |  |  |
|  | **September 30,**  | **September 30,**  | **Increase (Decrease)** | **Increase (Decrease)** |
|  | **2025** | **2024** | **$ Change** | **% Change** |
| Net cash provided by operating activities | $25181 | $51847 | (26666) | (51.4)% |
| Net cash used in investing activities | (148470) | (9645) | (138825) | (1439.3)% |
| Net cash provided by (used in) financing activities | 124300 | (42696) | 166996 | 391.1% |
| &nbsp;&nbsp;Net change in cash | $1011 | $(494) | $1505 |  |

---

***Operating Activities.*** Cash provided by operating activities was $25,181 for the nine months ended September 30, 2025, as compared to $51,847 for the nine months ended September 30, 2024. The decrease of $26,666 in cash provided by operating activities was primarily due to lower net income (loss) adjusted for reconciling items and a higher use of cash driven by an increase in accounts receivable due to timing of collections and stabilized inventory levels in the current year as compared to inventory reductions in the prior-year period. This was partially offset by an increase in accounts payable due to the timing of supplier payments.

***Investing Activities.*** Cash used in investing activities was $148,470 for the nine months ended September 30, 2025, as compared to $9,645 for the nine months ended September 30, 2024. The $138,825 increase in cash used in investing activities was driven by the acquisition of Accu-Fab, which was completed on July 1, 2025, slightly offset by lower capital investments in the current year period as the Company focuses on leveraging recent investments and controlling spend in 2025 while continuing to prioritize investments in high-return, capital-light growth and automation.

***Financing Activities.*** Cash provided by financing activities was $124,300 for the nine months ended September 30, 2025, as compared to cash used of $42,696 for the nine months ended September 30, 2024. The $166,996 increase in cash provided by financing activities was mainly due to borrowings in excess of debt repayments during the current year period on the Company's revolving credit facility. Additionally, under the share repurchase plan, the Company purchased $4,607 of common stock in the first nine months of 2025 as compared to $1,996 in the prior year period. The Company's decision to repurchase additional shares in 2025 will depend on business conditions, free cash flow generation, other cash requirements and stock price. Refer to Part II, Item 2. Unregistered Sales of Equity Securities and Use of Proceeds for additional information regarding share repurchases.

#### Amended and Restated Credit Agreement
On June 28, 2023, and as last amended on June 26, 2025, we entered into an amended and restated credit agreement (the Credit Agreement) with certain lenders and Wells Fargo Bank, National Association, as administrative agent (the Agent). The Credit Agreement provides for a $350,000 revolving credit facility, with a letter of credit sub-facility, and a swingline facility in an aggregate amount of $25,000. All amounts borrowed under the credit agreement mature on June 28, 2028.

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Borrowings under the Credit Agreement bear interest at a fluctuating secured overnight financing rate (SOFR) plus an applicable margin based on the current consolidated total leverage ratio (which may be adjusted for certain reserve requirements), plus 1.25% to 2.75% depending on the current Consolidated Total Leverage Ratio (as defined in the Credit Agreement). Under certain circumstances, we may not be able to pay interest based on SOFR. If that happens, we will be required to pay interest at the Base Rate, which is the sum of the higher of (i) the Prime Rate (as publicly announced by the Agent from time to time), (ii) the Federal Funds Rate plus 0.50%, and (iii) Adjusted Term SOFR for a one-month tenor in effect on such day plus 1.00%.

At September 30, 2025, the interest rate on outstanding borrowings under the Revolving Loan was 5.39%. We had availability of $35,658 under the revolving credit facility at September 30, 2025.

We must pay a commitment fee of 0.20% to 0.35% per annum on the average daily unused portion of the aggregate unused revolving commitments under the Credit Agreement. At September 30, 2025, this fee was 0.30%. We must also pay fees as specified in the Fee Letter (as defined in the Credit Agreement) and with respect to any letters of credit issued under the Credit Agreement.

The Credit Agreement contains usual and customary negative covenants for agreements of this type, including, but not limited to, restrictions on our ability to, subject to certain exceptions, create, incur or assume indebtedness; create, incur, assume or suffer to exist liens; make certain investments; allow our subsidiaries to merge or consolidate with another entity; make certain asset dispositions; pay certain dividends or other distributions to shareholders; enter into transactions with affiliates; enter into sale leaseback transactions; and exceed the limits on annual capital expenditures. The Credit Agreement also requires us to satisfy certain financial covenants, including a minimum interest coverage ratio of 3.00 to 1.00. At September 30, 2025, our interest coverage ratio was 6.23 to 1.00. The Credit Agreement also requires us to maintain a consolidated total leverage ratio not to exceed 4.00 to 1.00. As of September 30, 2025, our consolidated total leverage ratio was 3.47 to 1.00 (which was modified as of July 1, 2025, from 3.50 to 1.00 in connection with the acquisition of Accu-Fab).

The Credit Agreement includes customary events of default, including, among other things, payment default, covenant default, breach of representation or warranty, bankruptcy, cross-default, material ERISA events, material money judgments, and failure to maintain subsidiary guarantees. If an event of default occurs, the Agent will be entitled to take various actions, including the acceleration of amounts due under the Credit Agreement, termination of the credit facility, and all other actions permitted to be taken by a secured creditor.

***Other Debt***

Additionally, the Company has a Fond du Lac County and Fond du Lac Economic Development Corporation term note (Fond du Lac Term Note). The Fond du Lac Term Note is secured by a security agreement, payable in annual installments of $500 plus interest at 2.00% and is due in full in December 2028. The balance outstanding as of September 30, 2025 was $1,875, with the short-term and long-term balance of $500 and $1,375, respectively, recorded in other current liabilities and other long-term liabilities in the Condensed Consolidated Balance Sheets.

#### Capital Requirements and Sources of Liquidity
During the nine months ended September 30, 2025 and 2024, our capital expenditures were $8,430 and $9,753 respectively. The decrease of $1,323 was driven by the Company's focus on leveraging recent investments and controlling spend during 2025. Capital expenditures for the full year 2025 are expected to be between $13,000 and $17,000.

We have historically relied upon cash available through credit facilities, in addition to cash from operations, to finance our working capital requirements and to support our growth. At September 30, 2025, we had availability of $35,658 through our revolving credit facility. We regularly monitor potential capital sources, including equity and debt financings, in an effort to meet our planned capital expenditures and liquidity requirements. Our future success will be highly dependent on our ability to access outside sources of capital. We will continue to have access to the availability currently provided under the Credit Agreement as long as we remain compliant with the financial covenants. Based on our estimates at this time, we expect to be in compliance with these financial covenants through 2025 and the foreseeable future.

We believe that our operating cash flow and available borrowings under the Credit Agreement are sufficient to fund our operations for 2025 and beyond. However, future cash flows are subject to a number of variables, and additional capital expenditures

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will be required to conduct our operations. There can be no assurance that operations and other capital resources will provide cash in sufficient amounts to maintain planned or future levels of capital expenditures. In the event we make one or more acquisitions and the amount of capital required is greater than the amount we have available for acquisitions at that time, we could be required to reduce the expected level of capital expenditures and/or seek additional capital. If we seek additional capital, we may do so through borrowings under the Credit Agreement, joint ventures, asset sales, offerings of debt or equity securities or other means. We cannot guarantee that this additional capital will be available on acceptable terms or at all. If we are unable to obtain the funds we need, we may not be able to complete acquisitions that may be favorable to us or finance the capital expenditures necessary to conduct our operations.

#### Contractual Obligations
The following table presents our obligations and commitments to make future payments under contracts and contingent commitments at September 30, 2025:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | | **Payments Due by Period** | **Payments Due by Period** | **Payments Due by Period** | **Payments Due by Period** |
|  | <br>**Total** | **2025(Remainder)** | **2026 – 2027** | **2028 – 2029** | **Thereafter** |
| Long-term debt principal payment obligations <sup>(1)</sup> | $213733 | $500 | $1000 | $212233 | $— |
| Forecasted interest on debt payment obligations <sup>(2)</sup> | 26777 | 3417 | 19356 | 4004 |  |
| Finance lease obligations <sup>(3)</sup> | 2612 | 178 | 1844 | 535 | 55 |
| Operating lease obligations <sup>(3)</sup> | 37235 | 1947 | 15506 | 11101 | 8681 |
| &nbsp;&nbsp;Total | $280357 | $6042 | $37706 | $227873 | $8736 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) Principal payments under the Company's Credit Agreement, which expires in 2028 and the Fond du Lac Term Note, which is due in December 2028.

&nbsp;&nbsp;&nbsp;&nbsp;(2) Forecasted interest on debt obligations are based on the debt balance, interest rate, and unused fee of the Company's revolving credit facility and debt balance and interest rate of the Company's Fond due Lac Term Note.

&nbsp;&nbsp;&nbsp;&nbsp;(3) See Note 5 – Leases in the Notes to Condensed Consolidated Financial Statements for additional information.

#### Item 3. Quantitative and Qualitative Disclosures About Market Risk.
We are exposed to market risk from changes in customer forecasts, interest rates, and to a lesser extent, commodities. To reduce such risks, we selectively use financial instruments and other proactive management techniques.

***Customer Forecasts***

The use and consumption of our components, products and services fluctuates depending on order forecasts we receive from our customers. These order forecasts can change dramatically from quarter-to-quarter dependent upon the respective markets that our customers provide products in.

***Interest Rate Risk***

We are exposed to interest rate risk on certain of our short- and long-term debt obligations used to finance our operations and acquisitions. We have SOFR-based floating rate borrowings under the Credit Agreement, which exposes us to variability in interest payments due to changes in the referenced interest rates.

The amount borrowed under the revolving credit facility under the Credit Agreement was $211,858 million with an interest rate of 5.39% as of September 30, 2025. Please see "Liquidity and Capital Resources – Amended and Restated Credit Agreement" in Part I, Item 2 and Note 4 in the Notes to the Unaudited Condensed Consolidated Financial Statements of this Quarterly Report on Form 10-Q for more specifics.

A hypothetical 100-basis-point increase in interest rates would have resulted in an additional $0.8 million of interest expense based on our variable rate debt at September 30, 2025. We do not use derivative financial instruments to manage interest risk or to speculate on future changes in interest rates. A rise in interest rates could negatively affect our cash flow.

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***Commodity Risk***

*We source a wide variety of materials and components from a network of suppliers. Commodity raw materials, such as steel, aluminum, copper, paint and paint chemicals, and other production costs are subject to price fluctuations, which could have a negative impact on our results. We strive to pass along such commodity price increases to customers to avoid profit margin erosion and in many cases utilize contracts with those customers to mitigate the impact of commodity raw material price fluctuations. As of September 30, 2025, we did not have any commodity hedging instruments in place.*

#### Item 4. Controls and Procedures.

#### Evaluation of Disclosure Controls and Procedures
We maintain disclosure controls and procedures that are designed to provide reasonable assurance that information required to be disclosed in the reports we file or submit under the Securities Exchange Act of 1934, as amended (the Exchange Act), is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, to allow for timely decisions regarding required disclosure. In designing disclosure controls and procedures, our management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible disclosure controls and procedures. The design of any disclosure controls and procedures also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired objectives.

As of September 30, 2025, we carried out an evaluation, under the supervision and with the participation of our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act). Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that, due to the identification of the material weakness in our internal control over financial reporting as described below, our disclosure controls and procedures were not effective as of September 30, 2025. Notwithstanding the material weakness in our internal control over financial reporting, management believes the condensed consolidated financial statements included in this Quarterly Report on Form 10-Q fairly present, in all material respects, our financial position, results of operations and cash flows as of the dates presented, and for the periods ended on such dates, in conformity with accounting principles generally accepted in the United States of America (GAAP).

#### Remediation of Previously Identified Material Weakness
A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of our annual or interim condensed consolidated financial statements will not be prevented or detected on a timely basis.

As previously described in Part II, Item 9A of our Annual Report on Form 10-K for the fiscal year ended December 31, 2024, Management identified deficiencies in the design and operating effectiveness of internal control over financial reporting related to the review and approval of journal entries that constitutes a material weakness.

Subsequent to the identification of the material weakness, management under the oversight of the Audit Committee has been implementing measures and taking steps to address the underlying causes of the material weakness. Specifically, the following remediation efforts are planned or ongoing to ensure adequate review and approval of journal entries, including:

● Enhancing the design and implementation of controls over the review and approval of journal entries to ensure that all journal entries are subject to appropriate review and approval; and

● Providing additional training to personnel involved in the preparation and review of journal entries to ensure they understand and adhere to the revised control procedures.

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While we believe these efforts have improved our internal controls and address the underlying cause of the material weakness, the material weakness will not be remediated until our remediation plan has been fully implemented and tested and we have concluded that following the improvements to our internal controls, our control environment is operating effectively for a sufficient period of time. In particular, the enhanced compensating controls and training will require time to test and assess. We cannot be certain that the steps we are taking will be sufficient to remediate the control deficiencies that led to the material weakness in our internal control over financial reporting or prevent future material weaknesses or control deficiencies from occurring. In addition, we cannot be certain that we have identified all material weaknesses in our internal control over financial reporting, or that in the future we will not have additional material weaknesses in our internal control over financial reporting.

#### Changes in Internal Control Over Financial Reporting
In connection with the acquisition of Accu-Fab in July 2025, we are in the process of reviewing the internal control structure of Accu-Fab and, if necessary, will make appropriate changes as we continue to integrate Accu-Fab into our overall internal control over financial reporting process.

Except for the acquisition of Accu-Fab and the remediation efforts related to the previously identified material weakness, there were no changes in our internal control over financial reporting that occurred during the quarter ended September 30, 2025, that materially affected, or were reasonably likely to materially affect, our internal control over financial reporting.

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**PART II—OTHER INFORMATION**

#### Item 1. Legal Proceedings.
We are not currently a party to any material litigation proceedings. From time to time, however, we may be a party to litigation and subject to claims incident to the ordinary course of business. Regardless of the outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources and other factors.

#### Item 1A. Risk Factors
There have been no material changes to the risk factors previously disclosed in Part I, Item 1A, "Risk Factors," in our Annual Report on Form 10-K for the year ended December 31, 2024, which was filed with the SEC on March 6, 2025.

#### Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.
The table below sets forth information with respect to purchases we made of shares of our common stock during the quarter ended September 30, 2025:

---

| | | | | |
|:---|:---|:---|:---|:---|
| <br>**Period** | <br>**Total** <br>**Number** <br>**of Shares** <br>**Purchased** | <br>**Average Price** <br>**Paid per Share** | **Total Number** <br>**of Shares** <br>**Purchased as** <br>**Part of Publicly** <br>**Announced Plans** <br>**or Programs** <sup>(1)</sup> | **Dollar Value of** <br>**Shares that** <br>**May Yet Be** <br>**Purchased** <br>**Under the Plans** <br>**or Programs** <sup>(1)</sup> |
| July 2025 |  | $— |  | $14497519 |
| August 2025 |  | $— |  | $14497519 |
| September 2025 |  | $— |  | $14497519 |
| &nbsp;&nbsp;Total |  |  |  |  |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) On October 26, 2023, the Board of Directors approved a new share repurchase program of up to $25 million of shares through 2026. The new share repurchase program replaced the prior program.

**Item 5. Other Information**

During the three months ended September 30, 2025, no director or Section 16 officer of the Company adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement," as each term is defined in Item 408 of Regulation S-K.

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#### Item 6. Exhibits.
The exhibits listed in the Exhibit Index below are filed as part of this Quarterly Report on Form 10-Q.

#### EXHIBIT INDEX

---

| | |
|:---|:---|
| **Exhibit**<br>**Number** | **Description** |
| 31.1 | [Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.](tmb-20250930xex31d1.htm)  |
| 31.2 | [Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.](tmb-20250930xex31d2.htm)  |
| 32 | [Certification of Principal Executive Officer and Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.](tmb-20250930xex32.htm)  |
| 101.INS | Inline XBRL Instance Document |
| 101.SCH | Inline XBRL Taxonomy Extension Schema Document |
| 101.CAL | Inline XBRL Taxonomy Extension Calculation Linkbase Document |
| 101.DEF | Inline XBRL Taxonomy Extension Definition Linkbase Document |
| 101.LAB | Inline XBRL Taxonomy Extension Label Linkbase Document |
| 101.PRE | Inline XBRL Taxonomy Extension Presentation Linkbase Document |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |

---

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#### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | MAYVILLE ENGINEERING COMPANY, INC. | MAYVILLE ENGINEERING COMPANY, INC. |
| Date: November 5, 2025 | By: | /s/ Jagadeesh A. Reddy |
|  |  | Jagadeesh A. Reddy |
|  |  | President & Chief Executive Officer |
|  | By: | /s/ Rachele M. Lehr |
|  |  | Rachele M. Lehr |
|  |  | Chief Financial Officer |

---

## Exhibit 31.1

**Exhibit 31.1**

**CERTIFICATION PURSUANT TO**

**RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934, AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002**

I, Jagadeesh A. Reddy, certify that:

&nbsp;&nbsp;&nbsp;&nbsp;1. I have reviewed this Quarterly Report on Form 10-Q of Mayville Engineering Company, Inc.;

&nbsp;&nbsp;&nbsp;&nbsp;2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

&nbsp;&nbsp;&nbsp;&nbsp;3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

&nbsp;&nbsp;&nbsp;&nbsp;4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

&nbsp;&nbsp;&nbsp;&nbsp;5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

---

| | | |
|:---|:---|:---|
| Date: November 5, 2025 | By: | /s/ Jagadeesh A. Reddy |
|  |  | Jagadeesh A. Reddy |
|  |  | President & Chief Executive Officer |

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## Exhibit 31.2

**Exhibit 31.2**

**CERTIFICATION PURSUANT TO**

**RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934, AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002**

I, Rachele M. Lehr, certify that:

&nbsp;&nbsp;&nbsp;&nbsp;1. I have reviewed this Quarterly Report on Form 10-Q of Mayville Engineering Company, Inc.;

&nbsp;&nbsp;&nbsp;&nbsp;2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

&nbsp;&nbsp;&nbsp;&nbsp;3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

&nbsp;&nbsp;&nbsp;&nbsp;4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

&nbsp;&nbsp;&nbsp;&nbsp;5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

---

| | | |
|:---|:---|:---|
| Date: November 5, 2025 | By: | /s/ Rachele M. Lehr |
|  |  | Rachele M. Lehr |
|  |  | Chief Financial Officer |

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## Ex-32

**Exhibit 32**

**CERTIFICATION PURSUANT TO**

**18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO**

**SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002**

In connection with the Quarterly Report on Form 10-Q of Mayville Engineering Company, Inc. (the "Company") for the period ended September 30, 2025 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), Jagadeesh A. Reddy, as President and Chief Executive Officer of the Company, and Rachele M. Lehr, as Chief Financial Officer of the Company, each hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to his knowledge:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

---

| | | |
|:---|:---|:---|
| Date: November 5, 2025 | By: | /s/ Jagadeesh A. Reddy |
|  |  | Jagadeesh A. Reddy |
|  |  | President & Chief Executive Officer |
|  | By: | /s/ Rachele M. Lehr |
|  |  | Rachele M. Lehr |
|  |  | Chief Financial Officer |

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