Mayville director converts RSUs, gets new stock award

Mayville Engineering Company, Inc. director Timothy L. Christen reported routine equity compensation transactions.

Rhea-AI Filing Summary

Mayville Engineering Company, Inc. director Timothy L. Christen reported routine equity compensation transactions. He exercised 12,397 Director Restricted Stock Units into Common Stock at an exercise price of $0, increasing his direct holdings to 153,804 Common Shares. The exercised restricted stock units had vested 100% one year from their grant date.

Christen also received a new grant of 7,150 Director Restricted Stock Units, each representing a right to receive one share of Common Stock. These new units will vest 100% at the earlier of one year from grant or the next annual shareholder meeting.

Insider Trade Summary

12,397 shares exercised/converted

Exercise 3 txns

Insider Christen Timothy L

Role Director

Type	Security	Shares	Price	Value
Exercise	Director Restricted Stock Units	12,397	$0.00	$0.00
Grant/Award	Director Restricted Stock Units	7,150	$0.00	$0.00
Exercise	Common Stock	12,397	$0.00	$0.00

Holdings After Transaction: Director Restricted Stock Units — 7,150 contracts (Direct); Common Stock — 153,804 shares (Direct)

Footnotes (2)

1. F1. The restricted stock units vested 100% one year from the grant date.
2. F2. The restricted stock units will vest 100% at the earlier of one year or the next annual shareholder meeting.

Key Figures

RSUs exercised into Common Stock: 12,397 shares Common Stock held after transactions: 153,804 shares New Director RSU grant: 7,150 units +2 more

5 metrics

RSUs exercised into Common Stock 12,397 shares Director Restricted Stock Units converted on April 21, 2026

Common Stock held after transactions 153,804 shares Direct holdings following April 21, 2026 Form 4 transactions

New Director RSU grant 7,150 units Director Restricted Stock Units awarded on April 21, 2026

Underlying shares for new RSUs 7,150 shares Each new RSU corresponds to one share of Common Stock

Underlying shares for exercised RSUs 12,397 shares Director Restricted Stock Units converted into Common Stock

Key Terms

Director Restricted Stock Units, derivative security, vest 100%, annual shareholder meeting

4 terms

Director Restricted Stock Units financial

"security_title: "Director Restricted Stock Units" and underlying_security_title: "Common Stock""

Director restricted stock units are promises by a company to give board members company shares in the future, usually after a set time or when certain conditions are met. They matter to investors because they can dilute existing shareholders when converted to shares and reveal how the board’s pay is tied to the company’s performance—like a delayed paycheck in company stock that aligns a director’s interests with shareholders and can affect share supply when released.

derivative security financial

"transaction_code_description: "Exercise or conversion of derivative security""

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

vest 100% financial

"The restricted stock units vested 100% one year from the grant date."

annual shareholder meeting financial

"will vest 100% at the earlier of one year or the next annual shareholder meeting."

A yearly gathering where a company’s owners (shareholders) and its leaders meet to review performance, approve key decisions like electing directors, and vote on issues such as executive pay or major policy changes. Think of it as an annual town hall for people who own part of the business: investors use it to ask questions, influence direction through votes, and gauge management’s plans and transparency, all of which can affect the stock’s outlook.

FAQ

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

What insider transactions did MEC director Timothy L. Christen report?

Timothy L. Christen reported exercising 12,397 Director Restricted Stock Units into Common Stock and receiving a new grant of 7,150 Director Restricted Stock Units. These transactions reflect routine equity compensation rather than open-market buying or selling of Mayville Engineering Company, Inc. shares.

How many Mayville Engineering (MEC) shares does Timothy L. Christen hold after these transactions?

After exercising 12,397 Director Restricted Stock Units into Common Stock, Timothy L. Christen directly holds 153,804 shares of Mayville Engineering Company, Inc. common stock. This figure represents his direct ownership position as reported in the Form 4 filing following the April 21, 2026 transactions.

What new equity award did MEC grant to director Timothy L. Christen?

Mayville Engineering granted Timothy L. Christen 7,150 Director Restricted Stock Units, each tied to one share of Common Stock. These units constitute a director equity compensation award, separate from the units he exercised, and are designed to align director incentives with shareholder interests over time.

When do Timothy L. Christen’s new Director Restricted Stock Units at MEC vest?

The new 7,150 Director Restricted Stock Units will vest 100% at the earlier of one year from the grant date or the next annual shareholder meeting. This vesting schedule incentivizes continued board service during the upcoming year and links compensation timing to key corporate governance milestones.

Were there any open-market stock purchases or sales by Timothy L. Christen in this MEC Form 4?

No open-market purchases or sales were reported. The Form 4 shows only derivative-related acquisitions: exercising 12,397 Director Restricted Stock Units into Common Stock and receiving a new grant of 7,150 Director Restricted Stock Units, both at a reported price per unit of $0.00.

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

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Accepted by SEC EDGAR 04/23/2026 - 04:56 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Christen Timothy L

(Last) (First) (Middle)

135 SOUTH 84TH STREET

SUITE 300

(Street)

MILWAUKEE WISCONSIN 53214

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Mayville Engineering Company, Inc. [ MEC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/21/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	04/21/2026		M		12,397	A	$0	153,804	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Director Restricted Stock Units	$0	04/21/2026		M			12,397	(1)	(1)	Common Stock	12,397	$0	0	D
Director Restricted Stock Units	$0	04/21/2026		A		7,150		(2)	(2)	Common Stock	7,150	$0	7,150	D

Explanation of Responses:

1. The restricted stock units vested 100% one year from the grant date.

2. The restricted stock units will vest 100% at the earlier of one year or the next annual shareholder meeting.

	Garrett F. Bishop, Attorney-in-Fact for Timothy L. Christen	04/23/2026
	** Signature of Reporting Person	Date
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.
* Form 4: SEC 1474 (03-26)