Mayville Engineering Company, Inc. — Director's Dealing 2021

Mar 2, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Mayville Engineering Company, Inc. (MEC)
CIK: 0001766368
Period of Report: 2021-02-27

Reporting Person: Kamphuis Robert D (Director, Chairman, Pres. & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-02-27	Common Stock	M	73947	—	Acquired	301742	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-02-27	Restricted Stock Units	$0	M	73947	Disposed		Common Stock (73947)	Direct
2021-02-28	Restricted Stock Units	$0	A	81371	Acquired		Common Stock (81371)	Direct
2021-02-28	Stock Option (right to buy)	$14.01	A	164503	Acquired	2031-02-28	Common Stock (164503)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	80031	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Restricted Stock Units	$0		Common Stock (27795)	27794	Direct
Stock Option (right to buy)	$7.12	2030-02-27	Common Stock (370775)	370775	Direct
Stock Option (right to buy)	$17	2029-05-08	Common Stock (155684)	155684	Direct

Footnotes

F1: Reflects the most recent ESOP and 401(k) balance.

F2: The restricted stock units will vest 50% on each of February 27, 2021 and February 27, 2022.

F3: The restricted stock units will vest 50% on each of February 28, 2022 and February 28, 2023.

F4: The options will vest 50% on each of February 28, 2022 and February 28, 2023.

F5: The restricted stock units will vest 50% on each of May 8, 2020 and May 8, 2021.

F6: The options will vest 50% on each of February 27, 2021 and February 27, 2022.

F7: The options will vest 50% on each of May 8, 2020 and May 8, 2021.