# EDGAR Filing Document

**Accession Number:** 0001775978
**File Stem:** 0001567619-23-004262
**Filing Date:** 2023-3
**Character Count:** 7483
**Document Hash:** 9256edb8376a7126caf4f5a68194e100
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001567619-23-004262.hdr.sgml**: 20230302

**ACCESSION NUMBER**: 0001567619-23-004262

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230228

**FILED AS OF DATE**: 20230302

**DATE AS OF CHANGE**: 20230302

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Raber Ryan F
- **CENTRAL INDEX KEY:** 0001775978

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38894
- **FILM NUMBER:** 23700940

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

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

**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

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Raber Ryan F<br><sub>(Last) (First) (Middle)</sub><br>715 SOUTH STREET<br><sub>(Street)</sub><br>MAYVILLE, WI 53050<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-28 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_EVP - Strategy, Sales & Mktg_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Mayville Engineering Company, Inc. [ MEC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2023-02-28 |  | M |  | 30814 | A | $0 | 84541 | D |  |
| Common Stock | 2023-02-28 |  | F |  | 9860 | D | $16.06 | 74681 | D |  |
| Common Stock |  |  |  |  |  |  |  | 25881<sup>(1)</sup> | I | by ESOP and/or 401(k) Plan |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Restricted Stock Units | $0 | 2023-02-28 |  | M |  |  | 10707 | <sup>(2)</sup> | <sup>(2)</sup> | Common Stock | 10707 | $0 | 0 | D |  |
| Restricted Stock Units | $0 | 2023-02-28 |  | M |  |  | 20107 | <sup>(3)</sup> | <sup>(3)</sup> | Common Stock | 20107 | $0 | 20106 | D |  |
| Restricted Stock Units | $0 | 2023-02-28 |  | A |  | 25586 |  | <sup>(4)</sup> | <sup>(4)</sup> | Common Stock | 25586 | $0 | 25586 | D |  |
| Stock Option (right to buy) | $16.22 | 2023-02-28 |  | A |  | 44720 |  | <sup>(5)</sup> | 2033-05-28 | Common Stock | 44720 | $0 | 44720 | D |  |
| Stock Option (right to buy) | $10.32 |  |  |  |  |  |  | <sup>(6)</sup> | 2032-02-28 | Common Stock | 77426 |  | 77426 | D |  |
| Stock Option (right to buy) | $14.01 |  |  |  |  |  |  | <sup>(7)</sup> | 2031-02-28 | Common Stock | 43291 |  | 43291 | D |  |
| Stock Option (right to buy) | $7.12 |  |  |  |  |  |  | <sup>(8)</sup> | 2030-02-27 | Common Stock | 58979 |  | 58979 | D |  |
| Stock Option (right to buy) | $17.00 |  |  |  |  |  |  | <sup>(9)</sup> | 2029-05-08 | Common Stock | 27595 |  | 27595 | D |  |

---

### Footnotes:

(1) Reflects the most recent ESOP and 401(k) balance.

(2) The restricted stock units will vest 50% on each of February 28, 2022 and February 28, 2023.

(3) The restricted stock units will vest 50% on each of February 28, 2023 and February 28, 2024.

(4) The restricted stock units will vest 50% on each of February 28, 2024 and February 28, 2025.

(5) The options will vest 50% on each of February 28, 2024 and February 28, 2025.

(6) The options will vest 50% on each of February 28, 2023 and February 28, 2024.

(7) The options will vest 50% on each of February 28, 2022 and February 28, 2023.

(8) The options will vest 50% on each of February 27, 2021 and February 27, 2022.

(9) The options will vest 50% on each of May 8, 2020 and May 8, 2021.

**Signature:** /s/ Russell E. Ryba, Attorney-in-Fact for Ryan F. Raber  
**Date:** 2023-03-02

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**