Form of Restricted Stock Unit Award Agreement (Non-Employee Director) under the Mayville Engineering Company, Inc. 2019 Omnibus Incentive Plan

The Restricted Stock Units will vest on the first anniversary of the Vesting Commencement Date (or, if the Vesting Commencement Date is the date of the Company’s annual meeting of shareholders, on the earlier of the date of the Company’s annual meeting of shareholders in the following year or the first anniversary of the Vesting Commencement Date), provided that you continuously serve as a Director until the applicable vesting date.

If you cease to be a Director as a result of your death or disability (as determined by the Administrator), then 100% of the Restricted Stock Units will vest in full on the date of such termination.

Upon a Change of Control, Section 17(c) of the Plan will apply to this Award.

Except as otherwise provided above, if you cease to be a Director prior to the date the Restricted Stock Units are vested, you will forfeit the unvested Restricted Stock Units.

Transferability of

Restricted Stock Units:

You understand that you (and not the Company or any Affiliate) shall be responsible for your own federal, state, local or foreign tax liability and any of your other tax consequences that may arise as a result of the transactions contemplated by this Award. You shall rely solely on the determinations of your tax advisors or your own determinations, and not on any statements or representations by the Company or any of its agents, with regard to all such tax matters.

To the extent that the receipt, vesting or settlement of the Restricted Stock Units, or other event, results in income to you for federal, state or local income tax purposes, you shall deliver to the Company at the time the Company is obligated to withhold taxes in connection with such receipt, vesting, settlement or other event, as the case may be, such amount as the Company requires to meet its withholding obligation under applicable tax laws or regulations. If you fail to do so, the Company has the right and authority to deduct or withhold from other compensation payable to you an amount sufficient to satisfy its withholding obligations.

To the extent permitted by the Company at the time a tax withholding requirement arises, you may satisfy the withholding requirement in whole or in part, by electing to have the Company withhold for its own account that number of Shares otherwise deliverable to you upon settlement having an aggregate Fair Market Value on the date the tax is to be determined equal to the tax that the Company must withhold in connection with the vesting or settlement of such Restricted Stock Units; provided that the amount so withheld shall not exceed the maximum statutory rate to the extent necessary to avoid an accounting charge. Your election must be irrevocable, in writing, and submitted to the Secretary of the Company before the applicable vesting or settlement date. The Fair Market Value of any fractional Share not used to satisfy the withholding obligation (as determined on the date the tax is determined) will be paid to you in cash.

•  The Plan and this Award constitute the entire understanding of the parties with respect to the subject matter hereof and supersede in their entirety all prior undertakings and agreements between you and the Company with respect to the subject matter hereof. You expressly warrant that you are not accepting this Award in reliance on any promises, representations, or inducements other than those contained herein.

•  By accepting the grant of the Restricted Stock Units, you agree not to sell any Shares acquired in connection with the Restricted Stock Units other than as set forth in the Plan and at a time when applicable laws, Company policies or an agreement between the Company and its underwriters do not prohibit a sale.

•  As a condition of the granting of this Award, you agree, for yourself and your legal representatives or guardians, that this Award shall be interpreted by the Committee and that any interpretation by the Committee of the terms of this Award or the Plan and any determination made by the Committee pursuant to this Award shall be final, binding and conclusive.

•  Subject to the terms of the Plan, the Committee may modify or amend this Award without your consent as permitted by Section 15(c) of the Plan or: (i) to the extent such action is deemed necessary by the Committee to comply with any applicable law or the listing requirements of any principal securities exchange or market on which Shares are then traded; (ii) to the extent the action is deemed necessary by the Committee to preserve favorable accounting or tax treatment of this Award for the Company; or (iii) to the extent the Committee determines that such action does not materially and adversely affect the value of this Award or that such action is in the best interest of you or any other person who may then have an interest in this Award.

•  This Award may be executed in counterparts.